Bug fixes already.  Oh well.

Fixed a few bugs in the Perl parser, mostly related to certain regular expressions, ?: statements, and -s statements.  If you've had the automatic documentation or the prototypes for the explicit documentation stop before reaching the end of the file, this should fix it.

In minor feature news, the topics used for automatic grouping are now controlled by NaturalDocs::Topics, so those of you with custom topic types can take advantage.

Also, properties are now separate from variables.  If you documented something with "prop" or "property", it will have its own index and probably have a correct prototype if it didn't before.