Add valgrind tests and fix memleaks

tests/indent.sh

@@ -1,12 +1,27 @@
 #!/bin/sh
 
+case $# in
+	0)
+		source_dir="."
+		;;
+	1)
+		source_dir=$1
+		;;
+	*)
+		echo "usage: $0 [source_dir]"
+		exit 1
+		;;
+esac
+
 ret=0
-find .. -name "*.c" -o -name "*.h" | while read f; do
+find "$source_dir" -name "*.c" -o -name "*.h" | while read f; do
 	case $f in
-		../*/CMakeFiles/*)
+		${source_dir}/*/CMakeFiles/*)
+			;;
+		${source_dir}/CMakeFiles/*)
 			;;
 		*)
-			INDENT_PROFILE=../.indent.pro indent -st $f | diff -u $f -
+			INDENT_PROFILE="${source_dir}/.indent.pro" indent -st "$f" | diff -u "$f" -
 			ret=$((ret+$?))
 			;;
 	esac