ANDROID: net: Paranoid network.

With CONFIG_ANDROID_PARANOID_NETWORK, require specific uids/gids to instantiate
network sockets.

Signed-off-by: Robert Love <rlove@google.com>

paranoid networking: Use in_egroup_p() to check group membership

The previous group_search() caused trouble for partners with module builds.
in_egroup_p() is also cleaner.

Signed-off-by: Nick Pelly <npelly@google.com>

Fix 2.6.29 build.

Signed-off-by: Arve Hjønnevåg <arve@android.com>

net: Fix compilation of the IPv6 module

Fix compilation of the IPv6 module -- current->euid does not exist anymore,
current_euid() is what needs to be used.

Signed-off-by: Steinar H. Gunderson <sesse@google.com>

net: bluetooth: Remove the AID_NET_BT* gid numbers

Removed bluetooth checks for AID_NET_BT and AID_NET_BT_ADMIN
which are not useful anymore.
This is in preparation for getting rid of all the AID_* gids.

Change-Id: I879d7181f07532784499ef152288d12a03ab6354
Signed-off-by: JP Abgrall <jpa@google.com>

[AmitP: Folded following android-4.9 commit changes into this patch
        a2624d7b9d73 ("ANDROID: Add android_aid.h")]
Signed-off-by: Amit Pundir <amit.pundir@linaro.org>