Improved memory management for patches

src/dehacked.c

src/f_finale.c

src/hardware/hw_main.c

src/lua_hudlib.c

src/lua_infolib.c

src/m_menu.c

src/p_setup.c

src/r_data.c

src/r_defs.h

src/r_patch.c

src/r_patch.h

src/r_picformats.c

src/r_picformats.h

src/r_things.c

src/st_stuff.c

src/y_inter.c

src/z_zone.c

src/z_zone.h