Remove the last traces of the no longer existing cmd_l command

[choroba]

cmd_l was still mentioned in the documentation and comments. Also,
there was no test for the "v" command which would test #18900.

[choroba]

Should fix #19170

[choroba]

Sorry, used an old revision originally.

[jkeenan]

I got two test failures.

porting/cmp_version.t   (Wstat: 0 Tests: 6 Failed: 1)
  Failed test:  6
porting/exec-bit.t      (Wstat: 0 Tests: 135 Failed: 1)
  Failed test:  106

I know that you will have to increment $VERSION in lib/perl5db.pl to fix the first. Don't yet know how to fix the second. Can you look into this, and then run make test_porting before updating the p.r.?

Thank you very much.
Jim Keenan

[choroba]

Sorry for that, should be OK now. The second change was caused by my editor, it automatically set the execute bit on the .t file and I forgot to remove the change from the commit.

[jkeenan]

Unfortunately, I'm still getting one porting test failure.

===(    6791;1  0/?  6678/?  12/?  1/? )================================# Failed test 106 - tarball will chmod +x ../lib/perl5db.t at porting/exec-bit.t line 60
# Remove the exec bit or add '../lib/perl5db.t' to Porting/exec-bit.txt
porting/exec-bit.t ........ Failed 1/135 subtests                       

[choroba]

Oops, the bit was still set. Sorry. Force pushed again.

[jkeenan]

Okay, this looks good to me. @tonycoz, do you want to review it?

[tonycoz]

Also, there was no test for the "v" command which would test #18900.

There are tests for v around line 1187 added in cf70408 are these insufficient?

[choroba]

You are right, the existing tests are sufficient. I overlooked them.
So, it reduces my PR to just a comment and doc fix.