t/run/locale.t: Rmv duplicate closing of STDERR

STDERR is now closed during these tests, so no need to do it again.  And
if you wanted to see STDERR for some reason, you had to remember to fix
things in two places.  This also sets PERL_BADLANG to suppress some of
the things that we were closing STDERR to avoid printing.
Stop errorneous warnings for C locale

HP-UX - B.11.00/64 has a problem with the C locale that's only
noticeable from newly added warnings flooding the logs.  This adds a
test to suppress them.
generate_uudmap.c: Clarify comment
toke.c: \v is a legal C89 mnemonic.

Use this in preference to an octal number.
toke.c: Use mnemonic rather than numeric

This was clear because the comment gave what the number meant, but if
the value ever changed, this would break.
Delete: t/lib/1_compile.t, t/lib/compmod.pl

These are obsolete that no longer do anything useful.  See
http://nntp.perl.org/group/perl.perl5.porters/222709
t/re/pat_rt_report.t: Skip a test on os390

We run out of memory there for this test
t/re/reg_eval_scope.t: Don't stress memory limit

The test here used a lot of memory, causing problems on an os390 smoker.
The warning used is immaterial, so change to use a different warning,
one that doesn't use up memory.
t/run/locale.t: Nit in comment
perldiag: Add missing entry
t/op/utfhash.t: Clarify comment
perluniintro: Vertically stack ternarys

It's clearer and sets a better example for the reader
PerlIO::encoding:fallback.t: properly skip tests

My moving the 'use Test::More' outside of the BEGIN block, I don't get
the 'duplicate leader seen' error.
t/loc_tools.pl: Add optional parameter to find_locales()

This allows the caller to specify that they do not want to get back any
locales that aren't fully compatible with Perl.
t/run/locale.t: Don't operate on iffy locales

This takes advantage of the previous commit to exclude locales that we
can determine don't work fully with Perl.
Add test that to/from native character set works

For non-ASCII systems, there are character set translation tables.  This
makes sure the two accessible ones are inverses of each other.  If not,
nothing can be expected to work right.