util: fix compile warnings

This patch fixes two compile warnings introduced by commit
64b73291 ("util: create a copy of program_name"):
1. ../lib/util.c:457:5: error: passing argument 1 of 'free'
   discards 'const' qualifier from pointer target type; And
2. ../lib/util.c:463:5: error: ISO C90 forbids mixed declarations
   and code [-Werror=declaration-after-statement] (affected only
   branch-2.3 that is C90 compliant and not the master)

Reported-By: Joe Stringer <jstringer@nicira.com>
Reported-By: Lorand Jakab <lojakab@cisco.com>
Signed-Off-By: Ansis Atteka <aatteka@nicira.com>
Acked-by: Joe Stringer <joestringer@nicira.com>
tests: Fix race in 'balance-tcp bonding' test.

Running the test in a tight loop could cause this test to fail after
about 5 runs, with some of the ports reporting "may_enable: false" in
the "ovs-appctl bond/show" output. This commit fixes the race condition
by waiting for may_enable to be true for all bond ports.

I suspect that LACP negotiation finishes, but the main thread doesn't
have a chance to enable the ports before we send the test packets.

Signed-off-by: Joe Stringer <joestringer@nicira.com>
Acked-by: Ben Pfaff <blp@nicira.com>