flimflam: Enable curl debugging via _DBG_PORTAL

Enable curl debugging to help understand portal bugs

BUG=chromium-os:25185
TEST=/usr/local/lib/flimflam/debug +portal, examine logs

Change-Id: I664f58003237c004461ef4e6c8502c96dd3cbe99
Reviewed-on: https://gerrit.chromium.org/gerrit/14936
Tested-by: Jason Glasgow <jglasgow@chromium.org>
Reviewed-by: Sam Leffler <sleffler@chromium.org>
Commit-Ready: Jason Glasgow <jglasgow@chromium.org>
1 file changed