Convert most MESSAGE files to new syntax (${VARIABLE} gets replaced,
not @VARIABLE@, nor @@VARIABLE@@).
By default, substitutions are done for LOCALBASE, PKGNAME, PREFIX,
X11BASE, X11PREFIX; additional patterns can be added via MESSAGE_SUBST.
Clean up some packages while I'm there; add RCS tags to most MESSAGEs.
Remove some uninteresting MESSAGEs.
Apache JSSI parses JHTML files, executes the servlets as specified by the
<SERVLET> tag and replaces those tags with the output of the executed
servlet. The <SERVLET> tag can be seen as the server side equivalent of
the <APPLET> tag.
Note that SSI files for java servlets are called JHTML files in the
apache context while SHTML files are usually for traditional SSI (like
<!--#ECHO -->). This is a bit confusing since in the Java Web Server
(SUN) context SHTML files are used for java servlet SSI files and
JHTML is used for page compiled pages. Java Apache SSI does not support
page compiling.
