Allow 3.0, 3.1, 3.0svn and 3.1svn for llvm-root

Author: z0w0

configure

@@ -378,7 +378,7 @@ then
     LLVM_VERSION=$($LLVM_CONFIG --version)
 
     case $LLVM_VERSION in
-	(3.1svn)
+	(3.1svn|3.1|3.0svn|3.0)
 	    msg "found ok version of LLVM: $LLVM_VERSION"
 	    ;;
 	(*)