update: bump TextMate to version 0.17.1

[BradWalker]

desc: Update to the latest version of TextMate (0.17.1). In addition, cleanup the ide/textmate.lexer module code.

If this PR targets the delivery branch: don't merge. (full wiki article)

[matthiasblaesing]

I had a quick look at this and it looks sane from the code perspective. Issues I see:

• the text in org.eclipse.tm4e.core-0.17.1-license.txt has a header with name "License" this header is a reference to a file in nbbuild/licenses. The verify-libs-and-licenses ant task (you can run that locally yourself. Verifies that the texts match.
• the license file and the jar file must match in name only differing in the -license injection. So there are two options: You can change the final download name to org.eclipse.tm4e.core-0.17.1.jar (notice the change from underscore to dash). Or you can add a Files: to the org.eclipse.tm4e.core-0.17.1-license.txt file (directly after the Origin header), which get the filename of the jar als value.
• the updated textmate grammar can't be parsed as it uses regexps not supported by joni (joni has issues with look-behind patterns). These patterns either have to be manually fixed or the original grammer has to be retained for now.