Do not try to clone anything in /etc/profile
Now that we decided that GitMe, AKA Net installer (a minimal system which has
just enough to clone msysgit.git and mingw/4msysgit.git, and will then build git)
and a snapshot installer, which comes with all sources, but does not set up the
repositories, /etc/profile is not the right place to do the cloning anymore.
Sidenote: We plan to have three installers:
1) GitMe, AKA Net installer (minimal system to clone all)
2) msysGit, AKA full installer (full system, does not clone)
3) msysGitSnapshot (contains the build env, the sources, but no .git/)
Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>