Revert "Prepare release"

This reverts commit a0e362765d9d4afb0211f49eb787d2139b3eb7be.
Merge branch 'maint'

* maint:
  Prepare release
  Don't run testX420/1 on old slow Sparc systems
  testX420: Pass Options to the ASN.1 compiler
  asn1_erl_nif: Correct broken length encoding
  asn1_SUITE: Mend broken test_modified_x420/1
  Revert "Prepare release"

Conflicts:
	lib/asn1/doc/src/notes.xml
	lib/asn1/test/asn1_SUITE.erl
Fix problem with hanging event handler

OTP-10634
Update config.guess and config.sub to latest versions
Implement test case that triggers known deadlock bug
Solve problem with IO deadlock in ct_util_server
Merge remote branch 'origin/peppe/common_test/ct_master_evh'

* origin/peppe/common_test/ct_master_evh:
  Fix problem with hanging event handler

OTP-10634
Correct dialyzer warnings
Repair broken force_stop functionality
Fix problems with verbosity test suite
Merge remote branch 'origin/peppe/common_test/dialyzer_warnings'

* origin/peppe/common_test/dialyzer_warnings:
  Correct dialyzer warnings
Merge remote branch 'origin/peppe/common_test/tc_print_deadlock'

* origin/peppe/common_test/tc_print_deadlock:
  Fix problems with verbosity test suite
  Solve problem with IO deadlock in ct_util_server
  Implement test case that triggers known deadlock bug

OTP-10826
Merge remote branch 'origin/peppe/common_test/force_stop'

* origin/peppe/common_test/force_stop:
  Repair broken force_stop functionality

OTP-10832
Increase timetrap times in ct_verbosity_SUITE
Update copyright years
Prepare release