Also detect gmime 2.6

Also detect gmime version 2.6 (Michael Biebl)

Signed-off-by: Tzafrir Cohen (License #5035) <tzafrir.cohen@xorcom.com>

git-svn-id: https://origsvn.digium.com/svn/asterisk/branches/1.8@360087 65c4cc65-6c06-0410-ace0-fbb531ad65f3

configure

@@ -27505,7 +27505,7 @@ $as_echo "#define HAVE_GMIME 1" >>confdefs.h
 
 if test "x${PBX_GMIME}" = "x0" -a "${PKGCONFIG}" != "No"; then
 	# Later versions of GMime use pkg-config
-	for ver in 2.0 2.2 2.4; do
+	for ver in 2.0 2.2 2.4 2.6; do
 		if ! ${PKGCONFIG} --exists gmime-$ver; then
 			continue
 		fi

configure.ac

@@ -2047,7 +2047,7 @@ fi
 AST_EXT_TOOL_CHECK([GMIME], [gmime-config], [], [], [#include <gmime/gmime.h>], [gboolean q = g_mime_check_version(0,0,0);])
 if test "x${PBX_GMIME}" = "x0" -a "${PKGCONFIG}" != "No"; then
 	# Later versions of GMime use pkg-config
-	for ver in 2.0 2.2 2.4; do
+	for ver in 2.0 2.2 2.4 2.6; do
 		if ! ${PKGCONFIG} --exists gmime-$ver; then
 			continue
 		fi