libselinux: rename hashtab functions #587

Job	Run time
build (gcc, 3.12, 3.3)	1m 37s
build (gcc, 3.12, 3.3, test-flags-override)	1m 34s
build (gcc, 3.12, 3.3, test-debug)	1m 28s
build (gcc, 3.12, 3.3, linker-bfd)	1m 32s
build (gcc, 3.12, 3.3, linker-gold)	1m 38s
build (gcc, 3.11, 3.3)	1m 39s
build (gcc, 3.10, 3.3)	1m 29s
build (gcc, 3.9, 3.3)	1m 35s
build (gcc, 3.8, 3.3)	1m 39s
build (gcc, 3.7, 3.3)	2m 4s
build (gcc, pypy3.7, 3.3)	2m 0s
build (gcc, 3.12, 3.2)	1m 32s
build (gcc, 3.12, 3.1)	1m 31s
build (gcc, 3.12, 3.0)	1m 32s
build (gcc, 3.12, 2.7)	1m 57s
build (gcc, 3.12, 2.6)	1m 48s
build (gcc, 3.12, 2.5)	1m 42s
build (clang, 3.12, 3.3)	1m 42s
build (clang, 3.12, 3.3, test-flags-override)	1m 28s
build (clang, 3.12, 3.3, test-debug)	1m 32s
build (clang, 3.11, 3.3)	1m 43s
build (clang, 3.10, 3.3)	1m 41s
build (clang, 3.9, 3.3)	1m 37s
build (clang, 3.8, 3.3)	1m 47s
build (clang, 3.7, 3.3)	1m 56s
build (clang, pypy3.7, 3.3)	2m 13s
build (clang, 3.12, 3.2)	1m 42s
build (clang, 3.12, 3.1)	1m 47s
build (clang, 3.12, 3.0)	1m 42s
build (clang, 3.12, 2.7)	2m 38s
build (clang, 3.12, 2.6)	1m 55s
build (clang, 3.12, 2.5)	1m 58s
build (gcc, 3.12, 3.3, sanitizers)	2m 2s
	57m 40s

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