Add the ginac package
ginac: switch from autotools to cmake
Merge pull request #295 from hashdist/ginac

Add the ginac package
Initil add of git, this means users can have a 'recent' version of git everywhere for convenience
Merge pull request #299 from jcftang/wip-git

Initial add of git 2.0
initial add of saltstack
Merge pull request #298 from jcftang/wip-salt

initial add of saltstack
disable gettext in git build for now
Merge pull request #301 from jcftang/wip-disable-gettext-for-git

Disable gettext in git build for now