* acinclude.m4 (APACHE_CHECK_SSL_TOOLKIT): Add PKG_CONFIG_PATH for

specified OpenSSL location to avoid picking up system pkg-config
configuration.

PR: 38277
Submitted by: jorton
Backports: 378473


git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/branches/2.2.x@669681 13f79535-47bb-0310-9956-ffa450edef68