5971b88e is not needed in new configure.
This merge also reverts "fix QMAKE_DEFAULT_*DIRS resolution with
apple SDK", 2c9d15d7, because it breaks iOS build with new
configure system.
Conflicts:
mkspecs/features/default_pre.prf
mkspecs/features/mac/toolchain.prf
mkspecs/features/toolchain.prf
src/dbus/qdbusconnection.cpp
src/plugins/sqldrivers/mysql/qsql_mysql.cpp
src/sql/drivers/mysql/qsql_mysql.cpp
src/widgets/widgets/qmenubar.cpp
src/widgets/widgets/qmenubar_p.h
tools/configure/configureapp.cpp
tools/configure/environment.cpp
tools/configure/environment.h
Change-Id: I995533dd334211ebd25912db05b639d6f908aaec