Fix command-line arguments to test in drdr.
Some style things.
Improve some code, add a "verify" verb to verify paths in props info.
Fix lots of prop paths.
Lots of fixes for broken paths in props.

Found with the new verify functionality.
More improvements, more checks.

Check that the entries are sorted, and check that there's a
`responsible' for all files on disk, except for known exceptions.  It
might be better to use "git ls-tree HEAD <path>" instead of looking at
the filesystem, but then it won't work on drdr.
Add a bunch of missing `responsible' properties.
Drop many uses of "gracket" and "gracket-text" in drdr command-lines.

There were many such properties that were leftover from before the big
GUI rewrite where the gracket executable was needed, and now there is no
longer any need for these things.  There are two exceptions:

* There is a drdr feature that forces all tests that use gracket to run
  sequentially, which is used for tests that rely on some actual state
  of shown windows.  I ran all of the files and monitored for windows
  popping up, and left the test to use gracket in these cases.

* There are a few cases where running "racket -f <file>" resulted in an
  unbound identifier, whereas "gracket -f <file>" does not.  These are
  because of the different global namespace, and I will fix them (props
  and the files) in a different commit.

One of the expected results of this is that a drdr might run faster,
because the serial-running hack above should now be applied only where
relevant.  (And some of the drracket tests are very long.)

This commit is pushed by itself to identify possible problems with a
drdr run that tests only this change.
Sort the mess with aligned-pasteboard tests.

1. Lots of #lang-ization, other racketizations, code improvements, etc.

2. Some files that were not working now do.

3. "collects/tests/aligned-pasteboard" had some files that were near
   duplicates of "collects/mrlib/private/aligned-pasteboard/tests".
   I've removed the former since in a few places it looked like an older
   version (eg, there were bogus references to a non-existent
   "utils.rkt").  The former has more files that are in runnable
   condition now.

4. There are plenty of tests that look like they're failing, but it
   wasn't shown since they just return #f, and when they were running
   with a "-f" these results weren't displayed.

5. I have no idea about the code, this is all just reshuffling and minor
   editing.
Fix two mis-fixes in the previous props scan.
Make some .rktl tests run with "racket".

With this commit, all of the leftover mentions of gracket in
`drdr:command-line' are things that pop up windows.
racket/gui: fixed by-position widget initialization

This was broken in the class100 port. The init arguments
previously handled by the class100*/kw macro need to be
explicitly passed down.

Also, an (init-rest) is needed at the leaves of the class
hierarchy to ensure that internal super init args don't
leak via error messages. (the class100 macro always
inserts these)

Added a test file so similar breakage is detectable in the
future.
Simplify away uses of "-t" in `drdr:command-line'.

In some cases use `module+' to make the code run nicely without a "-m".

(And some other minor tweaks.)
`collects/teachpack/deinprogramm' belongs to Mike Sperber.
Improve drdr suffix-decision code, and the help text for prop setting.

The code is improved, and also the default changes for *.rkt files:
there is no need for any flags -- "-q" is redundant, and with no flags
it's doing "-u" which is the same as "-t" (with an added "-N").
Remove redundant `drdr:command-line' values.

Drop ones with the default for the suffix, and drop a few unnecessary
"-q" flags too.
More props code improvements.

Simplified code, and additional testing for redundant properties, and
for properties that can be collapsed into a parent directory (this might
be dropped or used only for notification on differences, see
commentage).

Also, make drdr test itself reflectively.
Collapse some properties where possible.

(Notified the responsible, so some of these might be undone later.
Pushing now to see how the self-testing works for meta/props.)
Error checking in bytecode reader.

Found by:
    fuzz.rkt -s 912673274  -f collects/setup/compiled/xref_rkt.zo
    fuzz.rkt -s 568444835  -f collects/syntax/scribblings/compiled/strip-context_scrbl.zo
    fuzz.rkt -s 1009851773 -f collects/mred/private/wx/cocoa/compiled/platform_rkt.zo
reformatting only