: tc action cleanup + fixes

Hi Jamal,

here is what I got so far, I'll continue tommorrow. Only compile tested yet. Please review and comment.

Patrick McHardy:
o [PKT_SCHED]: Disable broken override bits in pedit action
o [PKT_SCHED]: Return proper error codes in tcf_pedit_init
o [PKT_SCHED]: Remove checks for impossible conditions in pedit action
o [PKT_SCHED]: Clean up pedit action
o [PKT_SCHED]: Clean up tcf_ipt_init
o [PKT_SCHED]: Fix missing unlock in ipt action error path
o [PKT_SCHED]: Remove checks for impossible conditions in ipt action
o [PKT_SCHED]: Clean up ipt action
o [PKT_SCHED]: Return -EOPNOTSUPP if gact probability is requested
but not compiled in
o [PKT_SCHED]: Return proper error codes in tcf_gact_init
o [PKT_SCHED]: Remove checks for impossible conditions in gact action
o [PKT_SCHED: Clean up gact action
o [PKT_SCHED]: Clean up act_api.c action init path, propagate errors
properly
o [PKT_SCHED]: Check TCA_ACT_KIND payload size _before_ copying it
o [PKT_SCHED]: Remove checks for impossible conditions in act_api.c
o [PKT_SCHED]: Consistent comparision style in act_api.c
o [PKT_SCHED]: act_api.c whitespace cleanup

Regards
Patrick