Fix task team synchronization

The fix simply syncs up the new threads to have the same task_state and
task_team as the old threads.  The master thread is skipped,
because it shouldn't at this point have the team's task_team value yet
-- it should still have parent_team's task_team.  It gets pointed at
the new team's task_team later, after __kmp_allocate_team returns, and
the master has stored a memo of it's old task_state.

llvm-svn: 237916