bash: changed search pattern for upstream patches to be more tollerant regarding the bash version and to use .patch file suffix

shells/bash/bash.conf

@@ -37,7 +37,7 @@ pkg_bash_postmake() {
 pkg_bash_preconf() {
 	# historic hack - still needed? -ReneR
 	touch lib/malloc/malloc.c
-	for x in `match_source_file -p 'bash3.*-.*'` ; do
+	for x in `match_source_file -p 'bash.*-.*\.patch'` ; do
 		echo "Applying patch ${x##*/} ..."
 		patch -p0 < $x
 	done