fixed definition of culong on win64

lib/system.nim

@@ -999,11 +999,17 @@ type
     ## platform-dependant in general.
 
 when defined(windows):
-  type clong* {.importc: "long", nodecl.} = int32
-    ## This is the same as the type ``long`` in *C*.
+  type
+    clong* {.importc: "long", nodecl.} = int32
+      ## This is the same as the type ``long`` in *C*.
+    culong* {.importc: "unsigned long", nodecl.} = uint32
+      ## This is the same as the type ``unsigned long`` in *C*.
 else:
-  type clong* {.importc: "long", nodecl.} = int
-    ## This is the same as the type ``long`` in *C*.
+  type
+    clong* {.importc: "long", nodecl.} = int
+      ## This is the same as the type ``long`` in *C*.
+    culong* {.importc: "unsigned long", nodecl.} = uint
+      ## This is the same as the type ``unsigned long`` in *C*.
 
 type # these work for most platforms:
   cchar* {.importc: "char", nodecl.} = char
@@ -1032,8 +1038,6 @@ type # these work for most platforms:
     ## This is the same as the type ``unsigned short`` in *C*.
   cuint* {.importc: "int", nodecl.} = uint32
     ## This is the same as the type ``unsigned int`` in *C*.
-  culong* {.importc: "unsigned long", nodecl.} = uint
-    ## This is the same as the type ``unsigned long`` in *C*.
   culonglong* {.importc: "unsigned long long", nodecl.} = uint64
     ## This is the same as the type ``unsigned long long`` in *C*.
 
@@ -1042,10 +1046,10 @@ type # these work for most platforms:
     ## high value is large enough to disable bounds checking in practice.
     ## Use `cstringArrayToSeq` to convert it into a ``seq[string]``.
   
-  PFloat32* = ptr Float32 ## an alias for ``ptr float32``
-  PFloat64* = ptr Float64 ## an alias for ``ptr float64``
-  PInt64* = ptr Int64 ## an alias for ``ptr int64``
-  PInt32* = ptr Int32 ## an alias for ``ptr int32``
+  PFloat32* = ptr float32 ## an alias for ``ptr float32``
+  PFloat64* = ptr float64 ## an alias for ``ptr float64``
+  PInt64* = ptr int64 ## an alias for ``ptr int64``
+  PInt32* = ptr int32 ## an alias for ``ptr int32``
 
 proc toFloat*(i: int): float {.
   magic: "ToFloat", noSideEffect, importc: "toFloat".}