Let the location of libapr*.lib and APR include directory
default to the same prefix where this package is installed,
generally eliminating two required settings for users.

Axe the display of "Library files for XML" in the configuration
status, since that varies only with APR trunk.


git-svn-id: https://svn.apache.org/repos/asf/apr/apr-util/branches/1.5.x@1519267 13f79535-47bb-0310-9956-ffa450edef68