d28073d9 creates a distinction between "mac" and
"macx". The latter is not set on iOS, which caused
MakefileGenerator::target_mode to be set to TARG_UNIX_MODE.
Check for the "mac" active config instead of "macx".
Rename TARG_MACX_MODE -> TARG_MAC_MODE.
Change-Id: I7192788c33f5723034ba76da2492379dd454f0ab
Reviewed-by: Oswald Buddenhagen <oswald.buddenhagen@digia.com>
Reviewed-by: Tor Arne Vestbø <tor.arne.vestbo@digia.com>
c6a689f64f