Merge remote-tracking branch 'upstream/master'

CMakeLists.txt

assets/.gitignore

assets/CMakeLists.txt

cmake/Modules/CMakeASM_YASMInformation.cmake

cmake/Modules/CMakeDetermineASM_YASMCompiler.cmake

cmake/Modules/CMakeTestASM_YASMCompiler.cmake

cmake/Modules/FindGME.cmake

cmake/Modules/FindSDL2.cmake

cmake/Modules/FindSDL2_main.cmake

cmake/Modules/FindSDL2_mixer.cmake

cmake/Modules/GitUtilities.cmake

cmake/Modules/LibFindMacros.cmake

readme.txt

src/CMakeLists.txt

src/Makefile

src/command.c

src/comptime.c

src/config.h.in

src/d_clisrv.c

src/d_main.c