Stripped obsolete vk_nv_dedicated_allocation extension.
Misc fixes for warnings.
Linux now defaults to using ~/.local/share/fte instead of ~/.fte for greater consistency.
Other misc linux tweaks.
git-svn-id: https://svn.code.sf.net/p/fteqw/code/trunk@5267 fc73d0e0-1445-4013-8a0c-d673dee63da5