support windows paths, column number and error message in HXML build system

[nadako]

Subj. This changes the file_regex to support windows paths (with : in them) as well as adding groups for column number and error message as documented here: http://docs.sublimetext.info/en/latest/reference/build_systems.html#capturing-error-output-with-file-regex

[nadako]

Actually, it may make more sense to use end character number instead of the first one.

[nadako]

I also added a fix for the regexp in HaxeHelper.compilerOutput as well as extract_errors/highlight_errors so it works on windows for ctrl+enter builds.

[nadako]

aaaand the HaxeHelper.haxeFileRegex

[clemos]

I think the regex used to support line number + column number, but the problem was when the error had no column number (for multiple lines for instance), the regex didn't work at all, and the error was ignored... Can you confirm it works for both cases (single line + column number and multiple lines, no column number) ?

[nadako]

Yeah i tested with "lines", "characters" and "character" cases.

[clemos]

Thanks a lot :)