meson: only add -fno-strict-aliasing if supported by compiler
meson: only add -fno-strict-aliasing if supported by compiler

Fixes warning spam on MSVC builds.

https://bugzilla.gnome.org/show_bug.cgi?id=791622

endlessm/glib,johne53/MB3Glib,endlessm/glib,johne53/MB3Glib,johne53/MB3Glib,johne53/MB3Glib,johne53/MB3Glib,endlessm/glib,endlessm/glib,johne53/MB3Glib,endlessm/glib