Call the next version 2.1

We've changed so much since the 2.0.24 release that I'm really not
comfortable calling it 2.0.25.

Change-Id: I9cf28b0a97e0f74838bf893b79ce3105e0a7bfdb
Signed-off-by: Shawn O. Pearce <sop@google.com>
16 files changed