Convert back to __arraycount and use #ifdef __FreeBSD__ wherever possible
Convert Makefile to use netbsd-tests.test.mk
Apply the mods necessary to get the testcases to pass on both amd64 and i386, as well as compile on all architectures
TESTS_SUBDIRS -> SUBDIR for legacy/
Don't pull in legacy yet..
Remove copies of lib/msun/tests test programs