2019-12-05 regexp lint fixes

* lisp/org/org-agenda.el (org-agenda-filter):
Fix unescaped literal ‘+’ in regexp.  Reported by Mattias Engdegård in:
https://lists.gnu.org/r/emacs-devel/2019-12/msg00215.html
* lisp/org/org.el (org-clone-subtree-with-time-shift):
Fix a regexp typo that mishandled strings like ‘\1d’,
reported by the same emaikl.
* lisp/progmodes/verilog-mode.el (verilog-inject-inst):
Omit unnecessary ‘?’ in regexp.  Reported by Mattias Engdegård in:
https://lists.gnu.org/r/emacs-devel/2019-12/msg00217.html
1 job for master in 56 minutes and 57 seconds (queued for 3 seconds)
Status Job ID Name Coverage
  Test
failed #4441
test-all

00:56:57

 
Name Stage Failure
failed
test-all Test
Makefile:319: recipe for target 'check-doit' failed
make[2]: *** [check-doit] Error 1
make[2]: Leaving directory '/builds/emacs/emacs/test'
make[1]: *** [check-expensive] Error 2
Makefile:294: recipe for target 'check-expensive' failed
make[1]: Leaving directory '/builds/emacs/emacs/test'
make: *** [check-expensive] Error 2
Makefile:959: recipe for target 'check-expensive' failed
ERROR: Job failed: exit code 1