Build - envsetup: cmremote,cmgerrit,cmrebase,mka,reposync

Add the cm specific functions (cmremote, cmgerrit, cmrebase,
    mka, reposync) that are present in the gingerbread branch

Change-Id: I37dc256f499748640d087ed9199f39ad0c01f6d0
Signed-off-by: STELIX <ssspinni@gmail.com>
Build - make bacon and custom releasetool (for squished zips)

Change-Id: I8b60a3d51f2d91319d1a1e489c6dcd56b8b0158c
Signed-off-by: STELIX <ssspinni@gmail.com>