$subject.
Handle line/column 0 as 1, too big line/column as EOF/EOLN.
Alter msgwin_goto_messages_file_line() not to pass invalid line # to navqueue_goto_line() if we know for sure that the file name is valid.
Compatible with the existing regular expressions and internal parsing.
Updated for GRegex.
applies against 1.22, with small offsets
for 2012-12-17+
For Geany 2013-09-26+
GRegex files, similar to https://sourceforge.net/p/geany/bugs/1029/
For Geany 2014-02-16+
For Geany 2015-02-22+
(BTW, "GRegex files" above should be "GRegex fixes")