Allow special characters in page names

I'm migrating from another wiki to XWiki, but we're having problems. The old one accepted nearly anything in the page names, including periods, allowing us to have useful titles such as "JDK 1.5". XWiki seems to be hard-coded to use periods to separate the space name from the page name. I tried using "Main.JDK 1.5", but that doesn't work either. It assumes I mean a space of "Main.JDK 1" and a page name of "5".

I propose allowing the delimiter to be configurable, or to allow it to be escaped.

If that can't be done, how about displaying the page title instead of the page name in a link? In other words, if I have a page internally called "jdk15" but with a page title of "JDK 1.5", then a link to it should display "JDK 1.5" by default.