Update to httpd 2.4.10

Update httpd download link to 2.4.10, use https links.
Use environment bash

Use env to find bash instead of hardcoding "/bin/bash"
Update patch

Update patch to fix compatibility with httpd 2.4.10 and add
some improvements from the httpd SVN trunk.
Update httpd header files

Update to the header files from httpd 2.4.10, and add a configuration
for x64 Macs.
Update httpd os files to 2.4.10
Update APR to 1.5.1
Update DEPS
Update comments to refer to 2.4
Merge pull request #11 from Noctem/httpd-2_4_10

Update to httpd 2.4.10