Fix API version in header
https://github.com/google/snappy/pull/61
https://github.com/google/snappy/commit/26102a0c66175bc39edbf484c994a21902e986dc.patch
--- snappy-stubs-public.h.in.orig
+++ snappy-stubs-public.h.in
@@ -48,9 +48,9 @@
 #include <sys/uio.h>
 #endif  // HAVE_SYS_UIO_H
 
-#define SNAPPY_MAJOR ${SNAPPY_MAJOR}
-#define SNAPPY_MINOR ${SNAPPY_MINOR}
-#define SNAPPY_PATCHLEVEL ${SNAPPY_PATCHLEVEL}
+#define SNAPPY_MAJOR ${PROJECT_VERSION_MAJOR}
+#define SNAPPY_MINOR ${PROJECT_VERSION_MINOR}
+#define SNAPPY_PATCHLEVEL ${PROJECT_VERSION_PATCH}
 #define SNAPPY_VERSION \
     ((SNAPPY_MAJOR << 16) | (SNAPPY_MINOR << 8) | SNAPPY_PATCHLEVEL)