issue #63 - autogen.sh should use . (dot) instead of bash's source for those who don't use bash

Author: avnerbh

autogen.sh

@@ -6,9 +6,9 @@ topdir=$(dirname "$0")
 cd "$topdir"
 
 CURRENT_VERSION_FILE=./build/current-version
-if [ ! -f $CURRENT_VERSION_FILE ] # don't ruin file that might come from build-git-rpm.sh
+if [ ! -f $CURRENT_VERSION_FILE ] # don't ruin file that might come from build-rpm.sh
 then
-	source ./build/versioning.sh
+	. ./build/versioning.sh
 	echo ${VERSION}-${VER_GIT} > $CURRENT_VERSION_FILE
 	echo $GIT_REF >> $CURRENT_VERSION_FILE
 fi