Eliminate possiblity of concat() errors from bookinfo.xsl
Remove version from pomname to reduce clutter on publish page.
Update product name function

Are these even used for anything? I hope not.
Avoid various xslt errors when there's more than one of each raxm:* element.

Also, use $webhelpDirname for <url> if it's set.
Merge pull request #106 from dwcramer/bookinfoXslFixes

Bookinfo xsl fixes