Integrate:

Integrate:
[ 22992]
Fix for: [perl #30442] Text::ParseWords does not handle backslashed newline inside quoted text
Use the suggested regex fix, plus some tests.

[ 22997]
Cleanup the main regex in Text::ParseWords and make the
parse_line() routine faster. Add a Unicode test case.
p4raw-link: @22997 on //depot/perl: 429b060a3290b7ecf98534144fcaf0fb46b2afe3
p4raw-link: @22992 on //depot/perl: a8c6c617075a77facc3560cfdaa8948a894f9baf

p4raw-id: //depot/maint-5.8/perl@23034
p4raw-integrated: from //depot/perl@22997 'copy in'
	lib/Text/ParseWords.pm (@22992..)
p4raw-integrated: from //depot/perl@22992 'ignore'
	lib/Text/ParseWords.t (@10676..)