Add support for extended permission rules in conditional policies #565

Job	Run time
build (gcc, 3.11, 3.1)	1m 46s
build (gcc, 3.11, 3.1, test-flags-override)	1m 19s
build (gcc, 3.11, 3.1, test-debug)	2m 6s
build (gcc, 3.11, 3.1, linker-bfd)	1m 44s
build (gcc, 3.11, 3.1, linker-gold)	3m 20s
build (gcc, 3.10, 3.1)	1m 41s
build (gcc, 3.9, 3.1)	1m 55s
build (gcc, 3.8, 3.1)	1m 35s
build (gcc, 3.7, 3.1)	1m 45s
build (gcc, pypy3.7, 3.1)	2m 28s
build (gcc, 3.11, 3.0)	1m 40s
build (gcc, 3.11, 2.7)	2m 25s
build (gcc, 3.11, 2.6)	1m 56s
build (gcc, 3.11, 2.5)	1m 47s
build (clang, 3.11, 3.1)	1m 46s
build (clang, 3.11, 3.1, test-flags-override)	1m 35s
build (clang, 3.11, 3.1, test-debug)	1m 38s
build (clang, 3.10, 3.1)	1m 43s
build (clang, 3.9, 3.1)	1m 50s
build (clang, 3.8, 3.1)	1m 56s
build (clang, 3.7, 3.1)	1m 54s
build (clang, pypy3.7, 3.1)	2m 5s
build (clang, 3.11, 3.0)	5m 57s
build (clang, 3.11, 2.7)	5m 58s
build (clang, 3.11, 2.6)	3m 40s
build (clang, 3.11, 2.5)	2m 33s
build (gcc, 3.11, 3.1, sanitizers)	2m 52s
	1h 2m 54s

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