Added new Filter Constants.
Updated the named-regexp library to fix an infinite looping issue.
Optimized the DOCTYPE regex to fix a StackOverflowException.
Fixed a minor bug in FileUtilities and migrated a helper method to XMLUtilities.
Added more filter constants.
Merge branch 'master' into devel
Moved a constants from the builder to the commons project.
Fixed a bug where the DOCTYPE wouldn't be found if there wasn't any xml preamble.
Merge branch 'master' into devel