added three libs:

+  <project path="external/readline" name="RichardLuo/droid.external.readline" remote="github" />
+  <project path="external/coho" name="RichardLuo/droid.external.coho" remote="github" />
+  <project path="external/termcap" name="RichardLuo/droid.external.termcap" remote="github" />

Change-Id: I90b43a4ab522014c7d8579e4443a6a73d31f6fb4
Merge branch 'master' of https://github.com/RichardLuo/droid.repo.manifest into default
added new repo libjingle.talk and coho

Change-Id: Iab7c5896f293955f5addcc6143645b4bb5a6235d