This commit brings many changes:
1. Remove cotire;
2. Remove PCH files (stdafx.xxx) and mentions;
3. Rearrange and clean includes:
3.1. Remove core includes path, use full header path core/xxx;
3.2. Move object_ptr to separate file base/object_ptr.h;
3.3. Add missing includes;
5. Add forward decls;
6. Get rid of some Qt private parts;
7. Fix ALL compilation errors after removing cotire on Windows, Linux, MacOS.
Closes#133.
Related to #96.
Ubuntu 17.04 launch results in segfault if the build was done
by GCC 6.2 (works fine with GCC 4.9). Backtrace shows that it
crashes in gtk_init_check() call somewhere in libmirclient and
tests show that it works fine with GDK_BACKEND=x11.
So we use gdk_set_allowed_backends() method to explicitly state
that we support only "x11" GDK backend, that way it doesn't try
to use libmirclient and it does not crash.
Fix#3176#3162
Berkus Decker
Evgenii Zheltonozhskii
Alex
Vitaly Zaitsev
eegorov
John Preston