Variables starting with `g' in linuxdoom

• gameaction src/d_event.h:114
• gamekeydown src/g_game.c:183
• gametime src/d_net.c:366
• GAMMALVL4 src/m_menu.c:116
• GCC src/readme.asm:6
• gray src/r_draw.c:455
• grid src/am_map.c:217
• GS_DEMOSCREEN src/d_main.c:188