Change default editor to vim

set pager to busybox more, with colors,
'lv' tool could be better, but not in CM yet

https://github.com/tpruvot/android_external_lv/

Also add android etc/gitconfig, to enable colors

Signed-off-by: Tanguy Pruvot <tanguy.pruvot@gmail.com>
Android: add missing git-remote-http(s)

Which use the shared libexpat (for git push over http)

Prepare other optional tool list (shell, credential-store etc)
Should be added later as other "optional" modules

Signed-off-by: Tanguy Pruvot <tanguy.pruvot@gmail.com>