add some ugly aliases for LSB ABI compatibility

for some nonsensical reason, glibc's headers use inline functions that
redirect some of the standard functions to ugly nonstandard names (and
likewise for some of their nonstandard functions).

src/stdio/feof.c

@@ -8,3 +8,4 @@ int feof(FILE *f)
 }
 
 weak_alias(feof, feof_unlocked);
+weak_alias(feof, _IO_feof_unlocked);

src/stdio/ferror.c

@@ -8,3 +8,4 @@ int ferror(FILE *f)
 }
 
 weak_alias(ferror, ferror_unlocked);
+weak_alias(ferror, _IO_ferror_unlocked);

src/stdio/fgetc.c

@@ -11,3 +11,4 @@ int fgetc(FILE *f)
 }
 
 weak_alias(fgetc, getc);
+weak_alias(fgetc, _IO_getc);

src/stdio/fputc.c

@@ -10,3 +10,4 @@ int fputc(int c, FILE *f)
 }
 
 weak_alias(fputc, putc);
+weak_alias(fputc, _IO_putc);

src/stdio/getc_unlocked.c

@@ -6,3 +6,4 @@ int (getc_unlocked)(FILE *f)
 }
 
 weak_alias (getc_unlocked, fgetc_unlocked);
+weak_alias (getc_unlocked, _IO_getc_unlocked);

src/stdio/getdelim.c

@@ -57,3 +57,5 @@ oom:
 	errno = ENOMEM;
 	return -1;
 }
+
+weak_alias(getdelim, __getdelim);

src/stdio/putc_unlocked.c

@@ -6,3 +6,4 @@ int (putc_unlocked)(int c, FILE *f)
 }
 
 weak_alias(putc_unlocked, fputc_unlocked);
+weak_alias(putc_unlocked, _IO_putc_unlocked);