looking up the same files in the same locations over and over again
is a rather significant waste. in particular, looking up the CONFIG
flags that don't correspond with features has a measurable impact on qt
creator's project loading time.
Task-number: QTCREATORBUG-9154
Change-Id: Ibae3d8b7797e706a6416a7d45c77734ab1281b51
Reviewed-by: Daniel Teske <daniel.teske@digia.com>
(cherry picked from qtcreator/fa27cd79e05aed4ebd16d5648480cc7d48fefd43)
Reviewed-by: Joerg Bornemann <joerg.bornemann@digia.com>
3a6a462ad9