One bug and one fluff: need to use the '.' shell ``command'' to

source the file; and remove error message first time APR's
configure is run, and APRVAR doesn't exist.
PR:
Obtained from:
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git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/trunk@85705 13f79535-47bb-0310-9956-ffa450edef68