Add the bs build system from mpd-ke

Dealing with autotools is too painful when having
to deal with multiple build environments and
configurations.

git-svn-id: https://svn.musicpd.org/mpd/trunk@7368 09075e82-0dd4-0310-85a5-a0d7c8717e4f

bs/mkdir_p.sh

@@ -0,0 +1,37 @@
+#!/bin/sh
+# based on mkinstalldirs:
+#	Original author: Noah Friedman <friedman@prep.ai.mit.edu>
+#	Created: 1993-05-16
+#	Public domain.
+errstatus=0
+for file
+do
+	test -d "$file" && continue
+	case $file in
+	/*) pathcomp=/ ;;
+	*)  pathcomp= ;;
+	esac
+	oIFS=$IFS
+	IFS=/
+	set fnord $file
+	shift
+	IFS=$oIFS
+	for d
+	do
+		test "x$d" = x && continue
+		pathcomp=$pathcomp$d
+		case $pathcomp in
+		-*) pathcomp=./$pathcomp ;;
+		esac
+
+		if test ! -d "$pathcomp"; then
+			mkdir "$pathcomp" || lasterr=$?
+			if test ! -d "$pathcomp"; then
+				errstatus=$lasterr
+			fi
+		fi
+		pathcomp=$pathcomp/
+	done
+done
+
+exit $errstatus