WaE prefix in git commit comment (was: WaE: add missing sal and cppunit dependencies causing tinderbox failure)

[Tor Lillqvist]

I thinki it was Caolán that started using the WaE: prefix in git
commits, and when I asked him what it means indeed it is "Warnings are
Errors". As I have understood it the intent is that commits that fix
warnings (which are treated as errors if --enable-werror is used) use
the WaE: prefix.

--tml