merged build fix from RC_0_16

Jamfile

@@ -63,7 +63,9 @@ rule linking ( properties * )
 		}
 	}
 
+	# dbghelp doesn't appear to exist in mingw
 	if <target-os>windows in $(properties)
+		&& ! <toolset>gcc in $(properties)
 		&& ( <asserts>on in $(properties)
 			|| <variant>debug in $(properties)
 			|| <asio-debugging>on in $(properties) )

include/libtorrent/config.hpp

@@ -50,7 +50,9 @@ POSSIBILITY OF SUCH DAMAGE.
 #endif
 
 #if !defined _MSC_VER || _MSC_VER >= 1600
+#ifndef __STDC_LIMIT_MACROS
 #define __STDC_LIMIT_MACROS 1
+#endif
 #include <stdint.h> // for INT64_MAX
 #else
 #if !defined INT64_MAX
@@ -59,7 +61,9 @@ POSSIBILITY OF SUCH DAMAGE.
 #endif
 
 #ifndef _MSC_VER
+#ifndef __STDC_FORMAT_MACROS
 #define __STDC_FORMAT_MACROS 1
+#endif
 #include <inttypes.h> // for PRId64 et.al.
 #endif
 

include/libtorrent/file.hpp

@@ -59,6 +59,7 @@ POSSIBILITY OF SUCH DAMAGE.
 #include <windows.h>
 #include <winioctl.h>
 #include <sys/types.h>
+#include <sys/stat.h>
 #else
 // posix part
 #define _FILE_OFFSET_BITS 64