Applied change from Ben Nizette and Hans-Christian Egtvedt to

correctly detect version of gcc on recent distros.  Supplied 
patch was against git and didn't apply cleanly to svn, so applied 
by hand.

toolchain/dependencies/dependencies.sh

@@ -188,7 +188,8 @@ if [ -z "$COMPILER" ] ; then
 	exit 1;
 fi;
 
-COMPILER_VERSION=$($COMPILER --version 2>&1 | $XSED -e 's/^.*(.CC) \([0-9\.]\)/\1/g' -e "s/[-\ ].*//g" -e '1q')
+COMPILER_VERSION=$($COMPILER -v 2>&1 | $XSED -n '/^gcc version/p' |
+	$XSED -e 's/^gcc version \([0-9\.]\)/\1/g' -e 's/[-\ ].*//g' -e '1q')
 if [ -z "$COMPILER_VERSION" ] ; then
 	echo "gcc installed:		    FALSE"
 	/bin/echo -e "\n\nYou must install 'gcc' on your build machine\n";
@@ -215,7 +216,8 @@ if [ -z "$CXXCOMPILER" ] ; then
 	#exit 1
 fi
 if [ ! -z "$CXXCOMPILER" ] ; then
-	CXXCOMPILER_VERSION=$($CXXCOMPILER --version 2>&1 | $XSED -e 's/^.*(.CC) \([0-9\.]\)/\1/g' -e "s/[-\ ].*//g" -e '1q')
+	CXXCOMPILER_VERSION=$($CXXCOMPILER -v 2>&1 | $XSED -n '/^gcc version/p' |
+		$XSED -e 's/^gcc version \([0-9\.]\)/\1/g' -e 's/[-\ ].*//g' -e '1q')
 	if [ -z "$CXXCOMPILER_VERSION" ] ; then
 		echo "c++ installed:		    FALSE"
 		/bin/echo -e "\nYou may have to install 'g++' on your build machine\n"