Remaining cleanup of ap_ -> apr_ and AP_ -> APR_ transformation...
  see src/lib/apr/apr_compat.h for most details.
  Also a few minor nits to get Win32 to build.

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git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/trunk@86008 13f79535-47bb-0310-9956-ffa450edef68