Renamed the legalnotice.xml file to license.xml, because that's

what it is...
Note that til now, the build isn't actually doing anything with
the legalnotice.xml file -- it had content identical to the
copyright.xml file (which /is/ used by the build) -- though the
copyright.xml file now really does just have copyright stuff, so
made other changes to get everything matched up correctly.

diff --git a/xsl/docsrc/legalnotice.xml b/xsl/docsrc/license.xml
similarity index 100%
rename from xsl/docsrc/legalnotice.xml
rename to xsl/docsrc/license.xml