* Init gcc_jit_context_add_driver_option as optional

	* src/comp.c (init_gccjit_functions): Use LOAD_DLL_FN_OPT to init
	'gcc_jit_context_add_driver_option' as this is optional.
4 jobs for scratch/native-comp-gcc-driver-options in 130 minutes and 51 seconds (queued for 2 seconds)
latest
Status Job ID Name Coverage
  Test
failed #7250
test-filenotify-gio

00:00:03

failed #7251
test-native-bootstrap-speed0

01:25:56

failed #7252
test-native-bootstrap-speed1

01:26:04

passed #7253
test-native-bootstrap-speed2

02:10:49

 
Name Stage Failure
failed
test-native-bootstrap-speed1 Test
 ELC+ELN   ../lisp/replace.elc
ELC+ELN ../lisp/rfn-eshadow.elc
ELC+ELN ../lisp/scroll-bar.elc
ELC+ELN ../lisp/select.elc
ELC+ELN ../lisp/simple.elc
ELC+ELN ../lisp/startup.elc
ELC+ELN ../lisp/subr.elc
ELC+ELN ../lisp/tab-bar.elc
ERROR: Job failed: exit code 137
failed
test-native-bootstrap-speed0 Test
 ELC+ELN   ../lisp/progmodes/prog-mode.elc
ELC+ELN ../lisp/register.elc
ELC+ELN ../lisp/replace.elc
ELC+ELN ../lisp/rfn-eshadow.elc
ELC+ELN ../lisp/scroll-bar.elc
ELC+ELN ../lisp/select.elc
ELC+ELN ../lisp/simple.elc
ELC+ELN ../lisp/startup.elc
ERROR: Job failed: exit code 137
failed
test-filenotify-gio Test There has been a runner system failure, please try again
Running with gitlab-runner 12.0.2 (d0b76032)
on emba-docker-runner 2oEDrUT7
Using Docker executor with image debian:stretch ...
Pulling docker image debian:stretch ...
Using docker image sha256:6d935b41319bb2c76f2d18bb6a631b6f9cbe259d07105308b7053f5771736d2e for debian:stretch ...
Running on runner-2oEDrUT7-project-1-concurrent-0 via emba.gnu.org...
ERROR: Job failed (system failure): Error response from daemon: No such container: 7af583901cfe3e8a703b0f70c9fbe84df55b463067699c3941aef0fbc9e68789 (executor_docker.go:726:0s)