packages: nginx: clean up options

* Make all options enabling features (and default to y in case if
  they were previously disabling features).
* Add missing SSL dependencies to AUTH_BASIC and HTTP_CACHE, allowing
  them to be enabled/disabled independently.

Signed-off-by: Jonas Gorski <jogo@openwrt.org>

git-svn-id: svn://svn.openwrt.org/openwrt/packages@36379 3c298f89-4303-0410-b956-a3cf2f4a3e73
packages: nginx: update to 1.2.8

Adds various bug fixes and IPv6 support to the GEO IP module.

Signed-off-by: Jonas Gorski <jogo@openwrt.org>

git-svn-id: svn://svn.openwrt.org/openwrt/packages@36380 3c298f89-4303-0410-b956-a3cf2f4a3e73