[EFL] appcache tests are flaky

[EFL] appcache tests are flaky
https://bugs.webkit.org/show_bug.cgi?id=86619

Patch by Christophe Dumez <christophe.dumez@intel.com> on 2012-05-18
Reviewed by Ryosuke Niwa.

Source/WebKit/efl:

No longer set the application cache path in ewk_main since the
path can only be set once and this prevents DRT (or apps) to set
it. Update the ewk_settings documentation to reflect these
changes.

* ewk/ewk_main.cpp:
(_ewk_init_body):
* ewk/ewk_settings.h:

Tools:

Correctly set the application cache database path in EFL's
DumpRenderTree initialization code.

* DumpRenderTree/efl/DumpRenderTreeChrome.cpp:
(DumpRenderTreeChrome::initialize):

git-svn-id: http://svn.webkit.org/repository/webkit/trunk@117552 268f45cc-cd09-0410-ab3c-d52691b4dbfc