MFC r290532,r290561,r290843,r290844,r290845:

MFC r290532,r290561,r290843,r290844,r290845:

r290532:

Integrate tools/regression/lib/libc/locale into the FreeBSD test suite
as lib/libc/tests/locale

Sponsored by: EMC / Isilon Storage Division

r290561:

Delete leftover printfs from when these were TAP tests

Sponsored by: EMC / Isilon Storage Division

r290843:

Polish up the tests a bit more after projects/collation was merged to head

Provide more meaningful diagnostic messages if LC_CTYPE can't be set properly
instead of segfaulting, because setlocale returns NULL and strcmp(NULL, b) will
always segfault

Split up the testcases so one failing (in this case en_US.ISO8859-15) won't
cause the rest of the testcases to be skipped

Remove some unused variables

Sponsored by: EMC / Isilon Storage Division

r290844:

Polish up iswctype_test

- Split up the testcases into C locale and ja_JP.eucJP testcases.
- Avoid a segfault in the event that setlocale fails, similar to r290843
- Replace `sizeof(x) / sizeof(*x)` pattern with `nitems(x)`

Sponsored by: EMC / Isilon Storage Division

r290845:

Remove unused variables; sort by alignment where needed

Sponsored by: EMC / Isilon Storage Division

git-svn-id: svn://svn.freebsd.org/base/stable/10@291178 ccf9f872-aa2e-dd11-9fc8-001c23d0bc1f