Define strncasecmp and ftruncate for MSVC

Signed-off-by: NMarius Storm-Olsen <mstormo@gmail.com>
Acked-by: NJohannes Sixt <j6t@kdbg.org>
Signed-off-by: NJunio C Hamano <gitster@pobox.com>

compat/msvc.h

@@ -10,6 +10,8 @@
 #define __inline__ __inline
 #define __attribute__(x)
 #define va_copy(dst, src)     ((dst) = (src))
+#define strncasecmp  _strnicmp
+#define ftruncate    _chsize
 
 static __inline int strcasecmp (const char *s1, const char *s2)
 {