mic_adjust() adds tangent pair lists, hole id point fixes, more

MIC tangent points on the polygon are now added to nodes.
Fixed some failures for auto-gen polygon hole id points.
Got addSegments() working. A few API changes. to_svg() improvements.
new version
defined(@array) is deprecated - poss. fix for CPAN Testers report

Couple failed tests for Win64 with Strawberry Perl 5.16
Tests might have failed just due to this deprecation warning.
http://www.cpantesters.org/cpan/report/ba542591-7ee1-1014-a562-d1ccd6134d02