Added some config options.
Removed twc_config_profile_write_callback.
Added twc_list_foreach_reverse.
Improved performance of twc_list_get.

Walk the list backwards if we're getting an index closer to the end than the beginning.
Merge branch 'master' into debian/unstable
prepare for release

Signed-off-by: Kill Your TV <killyourtv@i2pmail.org>
Merge branch 'debian/unstable' into ubuntu/trusty
prepare for release

Signed-off-by: Kill Your TV <killyourtv@i2pmail.org>