Parse types for validity, and smarter checking #231

Job	Run time
test (8.2, main, pgsql)	2m 21s
test (8.2, main, pgsql)	2m 39s
test (8.2, MOODLE_403_STABLE, pgsql)	2m 27s
test (8.2, MOODLE_402_STABLE, pgsql)	2m 27s
test (8.1, MOODLE_401_STABLE, pgsql)	2m 51s
test (8, MOODLE_400_STABLE, pgsql, xmlrpc-beta)	3m 3s
test (8, MOODLE_311_STABLE, pgsql, xmlrpc-beta)	2m 42s
test (7.4, MOODLE_310_STABLE, pgsql)	2m 42s
test (7.4, MOODLE_39_STABLE, pgsql)	2m 23s
test (7.4, MOODLE_38_STABLE, pgsql)	2m 42s
test (7.3, MOODLE_37_STABLE, pgsql, ^3)	2m 19s
test (8.1, main, pgsql)	2m 22s
test (8.1, main, pgsql)	2m 30s
test (8, MOODLE_403_STABLE, pgsql)	2m 40s
test (8, MOODLE_402_STABLE, pgsql)	2m 23s
test (7.4, MOODLE_401_STABLE, pgsql)	3m 4s
test (7.3, MOODLE_400_STABLE, pgsql, ^3)	3m 2s
test (7.3, MOODLE_311_STABLE, pgsql, ^3)	2m 43s
test (7.2, MOODLE_310_STABLE, pgsql, ^3)	2m 44s
test (7.2, MOODLE_39_STABLE, pgsql, ^3)	2m 31s
	52m 35s

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