Add EnableSendfile on. Prevent web clients from accessing htaccess files and backup files (~ so far).
Revert "Add EnableSendfile on. Prevent web clients from accessing htaccess files and backup files (~ so far)."

This reverts commit 11d294e5dbf87b90b7c424362ea628d80993ccc1 as it was
meant for apache 2.4.
- up to 2.2.29; fixes from 2.2.26: CVE-2014-0098, CVE-2013-6438, CVE-2014-0118, CVE-2014-0231, CVE-2014-0226, CVE-2013-5704