Make http LayoutTests work in Debian with Apache 2.4.

Make http LayoutTests work in Debian with Apache 2.4.

This patch is migrated from https://bugs.webkit.org/show_bug.cgi?id=120352
Original patch in WebKit by Allan Sandfeld Jensen <allan.jensen@digia.com>;
Reviewed in WebKit by Andreas Kling.

Debian testing (jessie) and newer use Apache 2.4.

Select httpd.conf file for debian based on version, matching Fedora behavior.
Added an apache 2.4 configuration file adapted from Fedora's,
and renamed the 2.2 file to have consistent naming.

BUG=313632
Committed: https://src.chromium.org/viewvc/blink?view=rev&revision=161058

[jochen (gone - plz use gerrit), 2013-10-31 12:05:06]

lgtm

[commit-bot: I haz the power, 2013-10-31 12:16:45]

CQ is trying da patch. Follow status at
https://chromium-status.appspot.com/cq/mstensho@opera.com/47023017/1

[commit-bot: I haz the power, 2013-10-31 12:51:45]

Retried try job too often on linux_blink_rel for step(s) webkit_python_tests
http://build.chromium.org/p/tryserver.chromium/buildstatus?builder=linux_blin...

[commit-bot: I haz the power, 2013-10-31 13:26:28]

CQ is trying da patch. Follow status at
https://chromium-status.appspot.com/cq/mstensho@opera.com/47023017/60002

[commit-bot: I haz the power, 2013-10-31 14:20:12]

Change committed as 161058