Use UTF8 mandoc if locale supports it RT#85844

Patch from Ingo Schwarze <schwarze@openbsd.org>
Closes RT #85844
Fix POD errors scanning perlfunc RT#86472

Patch by Shlomi Fish <SHLOMIF@cpan.org>
Closes RT#86472
Wrong version in DEBUG for ToTerm.pm RT#85468

Previously displayed the version number for Pod::Text
Refactor search_perlop RT#86506

Couldn't figure out how the old code was supposed to work against 5.18
so I refactored it.  It seems to work for the common "function-like"
operators such as q, qq, qx, qr, tr, m, y