* buildconf: Strip the PACKAGE_* definitions from the generated
  ap_config_auto.h.in.  AC_INIT is not given the package arguments so
  they are unused here, and only pollute the namespace of anything
  which includes the installed header.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
GitHub: PR #380


git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/trunk@1937570 13f79535-47bb-0310-9956-ffa450edef68