Merge pull request #11 from iarna/improve-perl-detection

Improve Perl detection
Merge pull request #10 from iarna/sql-support

Add SQL support, unknown source
Merge pull request #9 from iarna/lsl-support

Add LSL support from Zai Lynch
Merge pull request #12 from iarna/improve-javascript

Improve javascript
Add some missing PHP keywords
Improve PHP detection
Recolor parens