* BUG: Make component compile with gcc 6.
[INTERPRETER]
* BUG: Include <cmath> instead of <math.h> for components written in C++, so that they compile with gcc 6.
[GB.GTK]
* BUG: Make component compile with gcc 6.
[GB.GTK3]
* BUG: Make component compile with gcc 6.
[GB.QT4]
* BUG: Make component compile with gcc 6.
[GB.QT5]
* BUG: Make component compile with gcc 6.
git-svn-id: svn://localhost/gambas/trunk@8088 867c0c6c-44f3-4631-809d-bfa615b0a4ec
