Upstream commit 4f7d7bf2159aa0a18b79bb417aa760abac817b2a
Modified: code/q3_ui/ui_ingame.c, added ui_admin.c.
Build on Linux: make B=build/release-linux-x86_64 makedirs
make -j1 B=build/release-linux-x86_64 BUILD_CLIENT=0 BUILD_SERVER=0 BUILD_GAME_SO=0 BUILD_MISSIONPACK=0 BUILD_GAME_QVM=1 CFLAGS=-O2 build/release-linux-x86_64/baseq3/vm/ui.qvm
