Bug 943874 - Update Git URL printed during mach bootstrap; r=ehsan

DONTBUILD (NPOTB)

--HG--
extra : rebase_source : e9d0f626803c2d9326f646b31f3f7bbc58a29bde
extra : amend_source : 39a4efa6ad8fd0c1d30a7d1970037edb281a471c

python/mozboot/mozboot/bootstrap.py

@@ -26,7 +26,7 @@ obtain a copy of the source code by running:
 
 Or, if you prefer Git:
 
-    git clone git://github.com/mozilla/mozilla-central.git
+    git clone https://git.mozilla.org/integration/gecko-dev.git
 '''