Add build support for VS2015 Community edition

Change-Id: Ibd667fdfe632b40a18ab0b0feb709301deb9631a
Reviewed-on: http://review.couchbase.org/53552
Tested-by: buildbot <[email protected]>
Reviewed-by: Dave Rigby <[email protected]>

Author: trondn

CMakeLists.txt

@@ -38,7 +38,9 @@ ADD_LIBRARY(conflate SHARED
 
 IF(WIN32)
     INCLUDE_DIRECTORIES(AFTER ${CMAKE_SOURCE_DIR}/platform/include/win32)
-    ADD_DEFINITIONS(-Dsnprintf=_snprintf)
+    IF (${CMAKE_C_COMPILER_VERSION} VERSION_LESS 19)
+        ADD_DEFINITIONS(-Dsnprintf=_snprintf)
+    ENDIF (${CMAKE_C_COMPILER_VERSION} VERSION_LESS 19)
 ELSE(WIN32)
     SET(ZLIB z)
 ENDIF(WIN32)

libmemcached/win32/wrappers.h

@@ -24,7 +24,9 @@
 #undef malloc
 #undef realloc
 
+#if _MSC_VER < 1900
 #define snprintf _snprintf
+#endif
 #define PRIu64 "I64u"
 
 #define poll(a,b,c) WSAPoll(a,b,c)