refactor headers, especially alltypes.h, and improve C++ ABI compat

the arch-specific bits/alltypes.h.sh has been replaced with a generic
alltypes.h.in and minimal arch-specific bits/alltypes.h.in.

this commit is intended to have no functional changes except:
- exposing additional symbols that POSIX allows but does not require
- changing the C++ name mangling for some types
- fixing the signedness of blksize_t on powerpc (POSIX requires signed)
- fixing the limit macros for sig_atomic_t on x86_64
- making dev_t an unsigned type (ABI matching goal, and more logical)

in addition, some types that were wrongly defined with long on 32-bit
archs were changed to int, and vice versa; this change is
non-functional except for the possibility of making pointer types
mismatch, and only affects programs that were using them incorrectly,
and only at build-time, not runtime.

the following changes were made in the interest of moving
non-arch-specific types out of the alltypes system and into the
headers they're associated with, and also will tend to improve
application compatibility:
- netdb.h now includes netinet/in.h (for socklen_t and uint32_t)
- netinet/in.h now includes sys/socket.h and inttypes.h
- sys/resource.h now includes sys/time.h (for struct timeval)
- sys/wait.h now includes signal.h (for siginfo_t)
- langinfo.h now includes nl_types.h (for nl_item)

for the types in stdint.h:
- types which are of no interest to other headers were moved out of
  the alltypes system.
- fast types for 8- and 64-bit are hard-coded (at least for now); only
  the 16- and 32-bit ones have reason to vary by arch.

and the following types have been changed for C++ ABI purposes;
- mbstate_t now has a struct tag, __mbstate_t
- FILE's struct tag has been changed to _IO_FILE
- DIR's struct tag has been changed to __dirstream
- locale_t's struct tag has been changed to __locale_struct
- pthread_t is defined as unsigned long in C++ mode only
- fpos_t now has a struct tag, _G_fpos64_t
- fsid_t's struct tag has been changed to __fsid_t
- idtype_t has been made an enum type (also required by POSIX)
- nl_catd has been changed from long to void *
- siginfo_t's struct tag has been removed
- sigset_t's has been given a struct tag, __sigset_t
- stack_t has been given a struct tag, sigaltstack
- suseconds_t has been changed to long on 32-bit archs
- [u]intptr_t have been changed from long to int rank on 32-bit archs
- dev_t has been made unsigned

summary of tests that have been performed against these changes:
- nsz's libc-test (diff -u before and after)
- C++ ABI check symbol dump (diff -u before, after, glibc)
- grepped for __NEED, made sure types needed are still in alltypes
- built gcc 3.4.6

arch/powerpc/bits/alltypes.h.in

@@ -0,0 +1,22 @@
+#define _Addr int
+#define _Int64 long long
+
+TYPEDEF __builtin_va_list va_list;
+TYPEDEF __builtin_va_list __isoc_va_list;
+
+#ifndef __cplusplus
+TYPEDEF long wchar_t;
+#endif
+TYPEDEF int wint_t;
+
+TYPEDEF float float_t;
+TYPEDEF double double_t;
+
+TYPEDEF long time_t;
+TYPEDEF long suseconds_t;
+
+TYPEDEF struct { union { int __i[9]; unsigned __s[9]; } __u; } pthread_attr_t;
+TYPEDEF struct { union { int __i[6]; void *__p[6]; } __u; } pthread_mutex_t;
+TYPEDEF struct { union { int __i[12]; void *__p[12]; } __u; } pthread_cond_t;
+TYPEDEF struct { union { int __i[8]; void *__p[8]; } __u; } pthread_rwlock_t;
+TYPEDEF struct { union { int __i[5]; void *__p[5]; } __u; } pthread_barrier_t;

arch/powerpc/bits/alltypes.h.sh

@@ -1,127 +0,0 @@
-#!/bin/sh
-sed -e << EOF \
-'/^TYPEDEF/s/TYPEDEF \(.*\) \([^ ]*\);$/#if defined(__NEED_\2) \&\& !defined(__DEFINED_\2)\
-typedef \1 \2;\
-#define __DEFINED_\2\
-#endif\
-/
-/^STRUCT/s/STRUCT * \([^ ]*\) \(.*\);$/#if defined(__NEED_struct_\1) \&\& !defined(__DEFINED_struct_\1)\
-struct \1 \2;\
-#define __DEFINED_struct_\1\
-#endif\
-/
-/^UNION/s/UNION * \([^ ]*\) \(.*\);$/#if defined(__NEED_union_\1) \&\& !defined(__DEFINED_union_\1)\
-union \1 \2;\
-#define __DEFINED_union_\1\
-#endif\
-/'
-
-TYPEDEF unsigned size_t;
-TYPEDEF int ssize_t;
-TYPEDEF int ptrdiff_t;
-
-TYPEDEF __builtin_va_list va_list;
-TYPEDEF __builtin_va_list __isoc_va_list;
-
-#ifndef __cplusplus
-TYPEDEF long wchar_t;
-#endif
-TYPEDEF int wint_t;
-TYPEDEF const int * wctrans_t;
-TYPEDEF unsigned long wctype_t;
-
-TYPEDEF signed char int8_t;
-TYPEDEF short       int16_t;
-TYPEDEF int         int32_t;
-TYPEDEF long long   int64_t;
-
-TYPEDEF unsigned char      uint8_t;
-TYPEDEF unsigned short     uint16_t;
-TYPEDEF unsigned int       uint32_t;
-TYPEDEF unsigned long long uint64_t;
-
-TYPEDEF unsigned short     __uint16_t;
-TYPEDEF unsigned int       __uint32_t;
-TYPEDEF unsigned long long __uint64_t;
-
-TYPEDEF int8_t    int_fast8_t;
-TYPEDEF int       int_fast16_t;
-TYPEDEF int       int_fast32_t;
-TYPEDEF int64_t   int_fast64_t;
-
-TYPEDEF unsigned char      uint_fast8_t;
-TYPEDEF unsigned int       uint_fast16_t;
-TYPEDEF unsigned int       uint_fast32_t;
-TYPEDEF uint64_t           uint_fast64_t;
-
-TYPEDEF int intptr_t;
-TYPEDEF unsigned uintptr_t;
-
-TYPEDEF long long          intmax_t;
-TYPEDEF unsigned long long uintmax_t;
-
-TYPEDEF float float_t;
-TYPEDEF double double_t;
-
-TYPEDEF long time_t;
-TYPEDEF int suseconds_t;
-TYPEDEF unsigned useconds_t;
-STRUCT timeval { time_t tv_sec; int tv_usec; };
-STRUCT timespec { time_t tv_sec; long tv_nsec; };
-
-TYPEDEF int pid_t;
-TYPEDEF unsigned id_t;
-TYPEDEF unsigned uid_t;
-TYPEDEF unsigned gid_t;
-TYPEDEF int key_t;
-
-TYPEDEF struct __pthread * pthread_t;
-TYPEDEF int pthread_once_t;
-TYPEDEF int pthread_key_t;
-TYPEDEF int pthread_spinlock_t;
-
-TYPEDEF struct { union { int __i[9]; size_t __s[9]; } __u; } pthread_attr_t;
-TYPEDEF unsigned pthread_mutexattr_t;
-TYPEDEF unsigned pthread_condattr_t;
-TYPEDEF unsigned pthread_barrierattr_t;
-TYPEDEF struct { unsigned __attr[2]; } pthread_rwlockattr_t;
-
-TYPEDEF struct { union { int __i[6]; void *__p[6]; } __u; } pthread_mutex_t;
-TYPEDEF struct { union { int __i[12]; void *__p[12]; } __u; } pthread_cond_t;
-TYPEDEF struct { union { int __i[8]; void *__p[8]; } __u; } pthread_rwlock_t;
-TYPEDEF struct { union { int __i[5]; void *__p[5]; } __u; } pthread_barrier_t;
-
-TYPEDEF long long off_t;
-
-TYPEDEF unsigned int mode_t;
-
-TYPEDEF unsigned int nlink_t;
-TYPEDEF unsigned long long ino_t;
-TYPEDEF unsigned long long dev_t;
-TYPEDEF unsigned long blksize_t;
-TYPEDEF unsigned long long blkcnt_t;
-TYPEDEF unsigned long long fsblkcnt_t;
-TYPEDEF unsigned long long fsfilcnt_t;
-
-TYPEDEF void * timer_t;
-TYPEDEF int clockid_t;
-TYPEDEF long clock_t;
-
-TYPEDEF struct { unsigned long __bits[128/sizeof(long)]; } sigset_t;
-TYPEDEF struct __siginfo siginfo_t;
-
-TYPEDEF unsigned int socklen_t;
-TYPEDEF unsigned short sa_family_t;
-TYPEDEF unsigned short in_port_t;
-TYPEDEF unsigned int in_addr_t;
-STRUCT in_addr { in_addr_t s_addr; };
-
-TYPEDEF struct __FILE_s FILE;
-
-TYPEDEF int nl_item;
-
-TYPEDEF struct __locale * locale_t;
-
-STRUCT iovec { void *iov_base; size_t iov_len; };
-
-EOF

arch/powerpc/bits/stdint.h

@@ -1,17 +1,16 @@
-#define INT_FAST8_MIN   INT8_MIN
+typedef int32_t int_fast16_t;
+typedef int32_t int_fast32_t;
+typedef uint32_t uint_fast16_t;
+typedef uint32_t uint_fast32_t;
+
 #define INT_FAST16_MIN  INT32_MIN
 #define INT_FAST32_MIN  INT32_MIN
-#define INT_FAST64_MIN  INT64_MIN
 
-#define INT_FAST8_MAX   INT8_MAX
 #define INT_FAST16_MAX  INT32_MAX
 #define INT_FAST32_MAX  INT32_MAX
-#define INT_FAST64_MAX  INT64_MAX
 
-#define UINT_FAST8_MAX  UINT8_MAX
 #define UINT_FAST16_MAX UINT32_MAX
 #define UINT_FAST32_MAX UINT32_MAX
-#define UINT_FAST64_MAX UINT64_MAX
 
 #define INTPTR_MIN      INT32_MIN
 #define INTPTR_MAX      INT32_MAX