get binbuild.sh working enough to create a binary which serves the It Works!

page

* change seds for apachectl and httpd*.conf to do the right thing
* use /usr/local/apache2 for the default install directory
* use a shell variable for the above, in case it needs to change again
* use httpd-std.conf in place of httpd.conf.default
* get rid of the httpd -R option in apachectl (not valid in 2.0)
* don't overlay httpd.conf if it already exists (1.3 does this - wtf?!?!)

not done in this commit:

* install manual/ and error/ correctly
* switch to --enable-mods-shared=most now that it works (thanks, aaron!)
* investigate weird behavior when .tar.gz already exists in parent dir
* investigate setting a Group directive that actually works in httpd*.conf


git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/trunk@92223 13f79535-47bb-0310-9956-ffa450edef68