Add testbuild.sh script (#699881)

For developers to build GParted in a git repository, logging the top
commit and build results to testbuild.log.  Intended for use with
git-test-sequence to verify every change of a patch set compiles, but
can be used standalone too.

Example usage:
    git-test-sequence origin/master.. testbuild.sh

Further documentation can be found on the GParted web site at page:
    Git Source Code Management
    http://www.gparted.org/git.php

Closes Bug #699881 - testbuild.sh - Builds GParted logging results

.gitignore

@@ -39,4 +39,5 @@ missing
 mkinstalldirs
 omf.make
 stamp-*
+testbuild.log
 xmldocs.make

testbuild.sh

@@ -0,0 +1,34 @@
+#!/bin/sh
+# testbuild.sh - Build GParted, logging top commit and build results.
+#                Command line parameters are passed to autogen.sh.
+#                MAKEFLAGS environment variable overrides make flags.
+#
+# Copyright (C) 2013 Mike Fleetwood
+#
+#  Copying and distribution of this file, with or without modification,
+#  are permitted in any medium without royalty provided the copyright
+#  notice and this notice are preserved.  This file is offered as-is,
+#  without any warranty.
+
+
+exec 1>> testbuild.log 2>&1
+echo '############################################################'
+echo "## Build date: `date`"
+echo '############################################################'
+git log -1
+echo '############################################################'
+
+set -x
+
+if [ "X$MAKEFLAGS" = 'X' ]; then
+	# Default to using the number of processors to tell make how
+	# many jobs to run simultaneously
+	nproc=`grep -c '^processor' /proc/cpuinfo` || nproc=1
+	MAKEFLAGS="-j $nproc"
+	export MAKEFLAGS
+fi
+
+# Disable bold text escape sequences from gnome-autogen.sh
+TERM=
+
+./autogen.sh "${@}" && make clean && make $MAKEFLAGS