Merge pull request #7282 from Goober5000/const_char_lookup #922

Job	Run time
Linux (Debug, gcc-13, -DFSO_BUILD_WITH_OPENGL=OFF -DFSO_BUILD_WITH_VULKAN=OFF)	13m 21s
Linux (Release, gcc-13, -DFSO_BUILD_WITH_OPENGL=OFF -DFSO_BUILD_WITH_VULKAN=OFF)	14m 59s
Linux (Release, gcc-9)	22m 31s
Linux (Debug, gcc-13)	14m 4s
Linux (Release, clang-16)	21m 41s
Linux (Release, gcc-13)	17m 3s
Linux (Debug, clang-16)	12m 7s
Linux (Debug, gcc-9)	17m 24s
	2h 13m 10s

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