Some code rewriting in ap_proxy_connect_handler():

Some code rewriting in ap_proxy_connect_handler():
*) Fixed bug where a hostname without a "." in it (such as "localhost")
would not trigger an IP address check with ProxyBlock.
*) Fixed ProxyBlock bugs with ap_proxy_http_handler() and
ap_proxy_connect_handler().
*) Updated ap_proxy_connect_handler() to support APR, while
moving some common code between http_handler and connect_handler
to proxy_util.c.
PR:
Obtained from:
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git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/trunk@88721 13f79535-47bb-0310-9956-ffa450edef68