Visual Studio builds: Enhance security of x64 binaries
Visual Studio builds: Enhance security of x64 binaries

Use the HIGHENTROPYVA linker option on x64 builds with MSVC 2012 and
later to enhance the security of the built binaries.

Pointed out by Ignacio Casal Quinteiro.

GNOME/gtksourceview,GNOME/gtksourceview,GNOME/gtksourceview,GNOME/gtksourceview,GNOME/gtksourceview,GNOME/gtksourceview,GNOME/gtksourceview,GNOME/gtksourceview,GNOME/gtksourceview,GNOME/gtksourceview,GNOME/gtksourceview,GNOME/gtksourceview,GNOME/gtksourceview,GNOME/gtksourceview,GNOME/gtksourceview