Add switch_all_submodules_to_head_and_clean script for developers

switch_all_submodules_to_head_and_clean

@@ -0,0 +1,41 @@
+#!/bin/bash
+
+if [[ ! -d .git ]]; then
+	echo "This script can only be run from a top level git directory.  Exiting..."
+	exit 1
+fi
+
+echo "Preparing $PWD for development use"
+if [[ $1 == "" ]]; then
+	read -p "Enter your TDE GIT username []: " -e gituser
+fi
+
+if [[ $gituser == "" ]]; then
+	gituser="anonymous"
+fi
+
+THISSCRIPT=$(readlink -f $0)
+echo "$THISSCRIPT"
+exit 1
+
+if [[ ! -e "$THISSCRIPT" ]]; then
+	echo "Unable to find myself!  Exiting..."
+	exit 1
+fi
+
+git reset --hard HEAD
+git clean -dxf
+
+if [[ -e .gitmodules ]]; then
+	if [[ $1 == "anonymous" ]]; then
+		sed -i 's/system@//g' .gitmodules
+	else
+		sed -i "s/system@/$1@/g" .gitmodules
+	fi
+
+	git submodule init
+	git submodule update
+	git submodule foreach "'git checkout master && git pull && $THISSCRIPT $1'"
+
+	git checkout -- .gitmodules
+fi