Merge #8730: depends: Add libevent compatibility patch for windows

64047f8 depends: Add libevent compatibility patch for windows (Wladimir J. van der Laan)

depends/patches/libevent/libevent-2-fixes.patch

@@ -0,0 +1,18 @@
+--- a/util-internal.h	2013-11-01 12:18:57.000000000 -0600
++++ b/util-internal.h	2015-07-20 20:19:43.199560900 -0500
+@@ -299,8 +299,13 @@ HANDLE evutil_load_windows_system_librar
+ 
+ #if defined(__STDC__) && defined(__STDC_VERSION__)
+ #if (__STDC_VERSION__ >= 199901L)
+-#define EV_SIZE_FMT "%zu"
+-#define EV_SSIZE_FMT "%zd"
++ #if defined(_MSC_VER) || defined(__MINGW32__) || defined(__MINGW64__)
++  #define EV_SIZE_FMT "%Iu"
++  #define EV_SSIZE_FMT "%Id"
++ #else
++  #define EV_SIZE_FMT "%zu"
++  #define EV_SSIZE_FMT "%zd"
++ #endif
+ #define EV_SIZE_ARG(x) (x)
+ #define EV_SSIZE_ARG(x) (x)
+ #endif