this allows LD_LIBRARY_PATH to take precedence over the hard-coded
rpath, which is the only sane thing to do (which is also why i'm not
adding an option to disable it).
this behavior is consistent with non-linux systems.
the windows version has no auto-detection, just like for gold linker
usage.
Task-number: QTBUG-3069
Change-Id: Ief9ba032291c898d75d76ecc740390954382a804
Reviewed-by: Simon Hausmann <simon.hausmann@theqtcompany.com>
67a24c260b