libmng build issues fix (#687)

media-libs/libmng/patches/libmng-2.0.3.patchset

@@ -0,0 +1,25 @@
+From f96cd1e17baaac1c9064274252892515521f4f5f Mon Sep 17 00:00:00 2001
+From: Calvin Hill <calvin@hakobaito.co.uk>
+Date: Sat, 9 Jul 2016 01:06:59 +0100
+Subject: [PATCH] Fix libmng build issues
+
+---
+ libmng_jpeg.c | 3 +++
+ 1 file changed, 3 insertions(+)
+
+diff --git a/libmng_jpeg.c b/libmng_jpeg.c
+index f5c43a4..e457d00 100644
+--- a/libmng_jpeg.c
++++ b/libmng_jpeg.c
+@@ -67,6 +67,9 @@
+ #include "libmng_pixels.h"
+ #include "libmng_jpeg.h"
+ 
++#define TRUE 1
++#define FALSE 0
++
+ #if defined(__BORLANDC__) && defined(MNG_STRICT_ANSI)
+ #pragma option -A                      /* force ANSI-C */
+ #endif
+-- 
+2.2.2