giflib: Update from 5.1.4 to 5.1.9

packages/giflib/Makefile.patch

@@ -0,0 +1,12 @@
+diff -u -r ../giflib-5.1.9/Makefile ./Makefile
+--- ../giflib-5.1.9/Makefile	2019-03-28 18:57:23.000000000 +0000
++++ ./Makefile	2019-03-29 22:55:30.125971028 +0000
+@@ -14,7 +14,7 @@
+ TAR = tar
+ INSTALL = install
+ 
+-PREFIX = /usr/local
++PREFIX ?= /usr/local
+ BINDIR = $(PREFIX)/bin
+ INCDIR = $(PREFIX)/include
+ LIBDIR = $(PREFIX)/lib

packages/giflib/build.sh

@@ -2,7 +2,7 @@ TERMUX_PKG_HOMEPAGE=https://sourceforge.net/projects/giflib/
 TERMUX_PKG_DESCRIPTION="A library for reading and writing gif images"
 TERMUX_PKG_LICENSE="MIT"
 TERMUX_PKG_MAINTAINER="Leonid Plyushch <leonid.plyushch@gmail.com> @xeffyr"
-TERMUX_PKG_VERSION=5.1.4
-TERMUX_PKG_REVISION=6
+TERMUX_PKG_VERSION=5.1.9
+TERMUX_PKG_SHA256=36ccab06aa43e5d608cdd74902f89c47fd55c348009798434ba5798967454057
 TERMUX_PKG_SRCURL=https://downloads.sourceforge.net/giflib/giflib-$TERMUX_PKG_VERSION.tar.gz
-TERMUX_PKG_SHA256=34a7377ba834397db019e8eb122e551a49c98f49df75ec3fcc92b9a794a4f6d1
+TERMUX_PKG_BUILD_IN_SRC=yes

packages/giflib/egif_lib.c.patch

@@ -1,17 +0,0 @@
---- src/lib/egif_lib.c.orig	2017-12-09 15:46:41.761228962 +0000
-+++ src/lib/egif_lib.c	2017-12-09 15:47:16.631668749 +0000
-@@ -25,6 +25,14 @@
- #include "gif_lib.h"
- #include "gif_lib_private.h"
- 
-+#ifndef S_IREAD
-+#define S_IREAD  00400
-+#endif
-+
-+#ifndef S_IWRITE
-+#define S_IWRITE 00200
-+#endif
-+
- /* Masks given codes to BitsPerPixel, to make sure all codes are in range: */
- /*@+charint@*/
- static const GifPixelType CodeMask[] = {