exec makeparallel

bash doesn't kill children when it receives SIGTERM.  Since makeparallel
is the last command run by the shell, run it with exec to replace the
shell with makeparallel so make can send the signal directly to
makeparallel.

Bug: 31907490
Test: m -j & killall make; pgrep -a makeparallel
Change-Id: If8aeb51ec224234da5f05eae3382ce77f48a57e2
1 file changed