Metacat

Updated build process to now use a copy of the source files so that keyword
substitution can ocur before the build. This allows for substitution of
hardcoded values into the source before the compile. Currently, I am
using this feature to do the following:

1) Substitute a "Release" number into the code
    2) Substitute a hardcoded servlet path into the code and html files

By changing the value of "servlet-path" and "installdir" properties in
build.xml, one can now easily install a new version of the servlet in a
different location by simply using "ant install".