Clean up the mod_tls configure process. This should remove most, if not

Clean up the mod_tls configure process.  This should remove most, if not
all, of the hand-editing required to make mod_tls compile.  I have also
updated the README to reflect the current process.  I have also noted that
we require OpenSSL 0.9.6 to compile.  I am getting all sorts of warnings
from the OpenSSL header files, and I get a single error from the OpenSSL
libraries, but I am assuming that is a problem with my configuration,
not the mod_tls code.

git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/trunk@88093 13f79535-47bb-0310-9956-ffa450edef68