GDB: Remove datadir patch

Lookup is done internally in the dumpers

Change-Id: Idc6a7bd7c47bb7e0655d10c21ac3e17421d98bdc
Reviewed-by: hjk <hjk121@nokiamail.com>
Reviewed-by: David Schulz <david.schulz@digia.com>
qtsupport: collect the Abi of all QtCore libraries

ios now uses libQt5Core_iphonesimulator.a and libQt5Core.a for device
and simulator, this changes detects both architectures.

Change-Id: I0e2883c06355eb2b75aeeba4365c8aea14bb8ced
Reviewed-by: Fawzi Mohamed <fawzi.mohamed@digia.com>