libselinux: rename hashtab functions #461

Job	Run time
build (gcc, 3.12, 3.3)	1m 37s
build (gcc, 3.12, 3.3, test-flags-override)	1m 25s
build (gcc, 3.12, 3.3, test-debug)	1m 24s
build (gcc, 3.12, 3.3, linker-bfd)	1m 38s
build (gcc, 3.12, 3.3, linker-gold)	1m 34s
build (gcc, 3.11, 3.3)	1m 31s
build (gcc, 3.10, 3.3)	1m 30s
build (gcc, 3.9, 3.3)	1m 42s
build (gcc, 3.8, 3.3)	1m 38s
build (gcc, 3.7, 3.3)	1m 42s
build (gcc, pypy3.7, 3.3)	2m 1s
build (gcc, 3.12, 3.2)	1m 36s
build (gcc, 3.12, 3.1)	1m 35s
build (gcc, 3.12, 3.0)	1m 33s
build (gcc, 3.12, 2.7)	1m 54s
build (gcc, 3.12, 2.6)	1m 50s
build (gcc, 3.12, 2.5)	1m 52s
build (clang, 3.12, 3.3)	1m 48s
build (clang, 3.12, 3.3, test-flags-override)	1m 33s
build (clang, 3.12, 3.3, test-debug)	1m 29s
build (clang, 3.11, 3.3)	1m 33s
build (clang, 3.10, 3.3)	1m 48s
build (clang, 3.9, 3.3)	1m 40s
build (clang, 3.8, 3.3)	1m 52s
build (clang, 3.7, 3.3)	1m 49s
build (clang, pypy3.7, 3.3)	2m 16s
build (clang, 3.12, 3.2)	1m 38s
build (clang, 3.12, 3.1)	1m 42s
build (clang, 3.12, 3.0)	1m 39s
build (clang, 3.12, 2.7)	1m 47s
build (clang, 3.12, 2.6)	2m 1s
build (clang, 3.12, 2.5)	2m 4s
build (gcc, 3.12, 3.3, sanitizers)	1m 59s
	56m 40s

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