githash incl branch, sample conf guid note

src/lib/git.sh

@@ -0,0 +1,6 @@
+#!/bin/sh
+
+hash=`git log -n 1 | sed -r 's/^commit (.{7}).*$/\1/g; 1!d'`
+branch=`git status | sed -r 's/^On branch (.+)/\1/g; 1!d'`
+echo '#define GITHASH " (git:'$branch'-'$hash')"'
+