https://bugs.webkit.org/show_bug.cgi?id=83035

Patch by Michael Brüning <michael.bruning@nokia.com> on 2012-04-17
Reviewed by Simon Hausmann.

The force_static_libs_as_shared feature for the Qt port will remove
hide_symbols from Qt's CONFIG in order to make them visible to other
libraries again.

Due to an evaluation order problem in qmake, the flags for the C++ compiler
that are set by adding hide_symbols to the CONFIG variables get applied
to qmake's C++ compiler flags directly and hence trying to remove these
later will not work and cause build failures when using the force_static_libs_as_shared
feature of the Qt port.

This is fixed by removing the flags that hide the exports from the compiler flags directly.

* qmake/mkspecs/features/force_static_libs_as_shared.prf:

git-svn-id: http://svn.webkit.org/repository/webkit/trunk@114371 268f45cc-cd09-0410-ab3c-d52691b4dbfc