Accept incomplete http cookies without domain.

Works around a bug in some servers that apparently send incomplete cookies.
Fixes a part of ticket #2619.

Reviewed-by: Micah Galizia
Merge remote-tracking branch 'cehoyos/master'

* cehoyos/master:
  Accept incomplete http cookies without domain.

Merged-by: Michael Niedermayer <michaelni@gmx.at>