BaseQtVersion: Remove some useless calles to updateVersionInfo()

qmakeProperty and qtVersion call that implicitly already.

Change-Id: If4596740b9da02ef662b9831019f19c4d679cd39
Reviewed-by: Daniel Teske <daniel.teske@digia.com>
Debugger: Make ABI matching a bit more fuzzy

The debugger ABI might not be fully defined, so ignore any field
that is undefined in the debugger ABI.

Change-Id: Idf57b76efff12d4ab4c21f18721a02970efbf217
Reviewed-by: Tobias Hunger <tobias.hunger@digia.com>