tree b8e5749072fb6e08c2f2f6f019aeb7532a1cccb3
parent 5465727e538bcd77200f8b3c75f002367597fc51
author Colin Cross <ccross@android.com> 1335213718 -0700
committer Colin Cross <ccross@android.com> 1335213821 -0700

Treat groups= as default

Previous incarnations of groups support left "groups=" in the
repo .config, which is now treated as "delete all the projects".
Treat empty groups configuration the same as no groups
configuration.

Change-Id: I57dab8dac55bdbf4cc181e2748cd2e4e510764f5