Add Vagrant support (easy Linux VM setup)

.gitignore

@@ -247,3 +247,6 @@
 *.pdb
 /Debug/
 /Release/
+/.vagrant/
+/vagrant2[0-9][0-9][0-9]*-*-*
+/d2[0-9][0-9][0-9]*-*-*

Makefile

@@ -2259,9 +2259,9 @@ LN_OR_CP_BUILT_IN_BINDIR = \
 	cp "$$bindir/git$X" "$$bindir/$$p" || exit;
 LN_OR_CP_BUILT_IN_EXECDIR = \
 	test -z "$(NO_INSTALL_HARDLINKS)" && \
-	ln "$$exectir/git$X" "$$exectir/$$p" 2>/dev/null || \
-	ln -s "git$X" "$$exectir/$$p" 2>/dev/null || \
-	cp "$$exectir/git$X" "$$exectir/$$p" || exit;
+	ln "$$execdir/git$X" "$$execdir/$$p" 2>/dev/null || \
+	ln -s "git$X" "$$execdir/$$p" 2>/dev/null || \
+	cp "$$execdir/git$X" "$$execdir/$$p" || exit;
 else
 LN_OR_CP_BUILT_IN_BINDIR = \
 	cp "$(BUILT_IN_WRAPPER)" "$$bindir/$$p" || exit;

Vagrantfile

@@ -0,0 +1,58 @@
+# -*- mode: ruby -*-
+# vi: set ft=ruby :
+
+# This Vagrantfile defines the requirements of a Linux development environment
+# to develop/run Git. This environment can be set up conveniently by installing
+# Vagrant and VirtualBox and calling "vagrant up" in the /usr/src/git directory.
+#
+# See https://github.com/git-for-windows/git/wiki/Vagrant for details.
+
+# Vagrantfile API/syntax version. Don't touch unless you know what you're doing!
+VAGRANTFILE_API_VERSION = "2"
+
+$provision = <<PROVISION
+apt-get update
+apt-get install -y make gcc libexpat-dev libcurl4-openssl-dev gettext tk8.6 libsvn-perl
+
+# clean .profile in case we're re-provisioning
+n="$(grep -n 'cd /vagrant' < /home/vagrant/.profile 2> /dev/null |
+	sed 's/:.*//')"
+test -z "$n" || {
+	head -n $(($n-1)) < /home/vagrant/.profile > /tmp/.profile
+	mv /tmp/.profile /home/vagrant/.profile
+}
+
+# add a nice greeting
+cat >> /home/vagrant/.profile << \EOF
+
+cd /vagrant/
+export PATH=/home/vagrant/bin:$PATH
+cat << \TOOEOF
+
+Welcome to the Vagrant setup for Git!
+--------------------------------------
+
+To build & install Git, just execute
+
+	make -j NO_PERL_MAKEMAKER=t install
+
+For more information, see https://github.com/git-for-windows/git/wiki/Vagrant
+TOOEOF
+EOF
+
+cat << EOF
+
+Now that everything is set up, connect to the Vagrant machine with the command:
+
+	vagrant ssh
+
+EOF
+PROVISION
+
+Vagrant.configure(VAGRANTFILE_API_VERSION) do |config|
+  # Start with a 64-bit Ubuntu 12.04 "Precise Penguin" box
+  config.vm.box = "ubuntu/trusty64"
+  config.vm.box_url = "https://atlas.hashicorp.com/ubuntu/boxes/trusty64"
+
+  config.vm.provision :shell, :inline => $provision
+end