installed_progs.t: Add 9 important programs

c94d4aa4-44cf-11e4-a84e-c80aa9e67bbd
installed_progs.t: Test 96 commands from coreutils

Test almost every package listed by "apt-cache show coreutils" except
"test" (didn't work) and "flock" (it says it comes from util-linux).

63af70ae-44d0-11e4-a996-c80aa9e67bbd
Genlog: Expand digit field width from %2u to %3u

Now that installed_progs.t runs 118 tests by default, we need another
digit.

60400b0a-44d4-11e4-90e7-fefdb24f8e10
installed_progs.t: Change regexp for script(1) on Debian 6.0.10

017d7470-44d6-11e4-9834-0026b9848456
installed_progs.t: uuidgen: Test output instead of using --version

uuidgen on Debian 6.0.10 complains about invalid option, so test that
the output from "uuidgen -t" returns a valid UUID v1 instead.

7b1b0db6-44da-11e4-bbaa-0026b9848456
installed_progs.t: ctags: Check for Emacs version too

At least that's what's installed on this Debian 6.0.10 box.

94d1e470-44dd-11e4-8223-0026b9848456
Merge branch 'installed_progs.fix-tests-on-debian-6'

Some tests didn't work on Debian 6.0.10.

* installed_progs.fix-tests-on-debian-6:
  installed_progs.t: ctags: Check for Emacs version too
  installed_progs.t: uuidgen: Test output instead of using --version
  installed_progs.t: Change regexp for script(1) on Debian 6.0.10

da5f59c4-44e1-11e4-a5a7-0026b9848456