guality.exp: Run also c-c++-common/guality/ tests.
* gcc.dg/guality/guality.exp: Run also c-c++-common/guality/ tests.
* gcc.dg/guality/guality.h: Include unistd.h. Make the header usable
in C++.
(gualcvt): New overloaded inline.
(GUALCVT): Use it for C++.
* g++.dg/guality/guality.exp: New.
* g++.dg/guality/guality.h: New.
* g++.dg/guality/redeclaration1.C: New test.
* g++.dg/dg.exp: Prune also guality/* tests.
* gcc.dg/guality/pr43141.c: Moved to...
* c-c++-common/guality/pr43141.c: ... here.
From-SVN: r162266