Trying to remove a bunch of autoconf and .htaccess-related stuff.
This commit is the last one from a series now finally allowing to run
icingaweb directly from a git checkout.
refs #4075
Control httpd to not use the sendfile support from the kernel to
transmit file contents to the client because the sendfile syscall
is broken with the VirtualBox file system as of the time of writing.
refs #4384
Marius Hein
Thomas Gelf
Eric Lippmann