[ 617097 ] EditorWindow.py: underline recent files

Added a couple of mods to reduce the indentation level.

Note that the recent files menu doesn't update until
Idle is restarted, pre-existing bug, at least on Linux.

a junk directory behind that caused 4 other tests to fail later.  Now
it cleans up after itself, and the 4 bogus later failures don't happen.

__STDC__ is defined (or something like that ...).

[ 617109 ] WindowList.py: fix win98 quit.

[ 617125 ] EditorWindow.py: Fix the wrap
(used 'none' instead of NONE)

still may contain dots), then if that doesn't exist look for the name
with dots replaced by underscores.  This is a little more forgiving.

by some email headers.

Don't pollute the namespace when protecting against multiple header inclusion.
Prefix with Py_ and use standard naming convention Py_FILENAME_H.

scheme.

characters.

Ensure that even if FormatMessage fails we (a) don't crash, and (b) provide something useful.

Bugfix candidate.

all along.  Before instr_lb tended to be too high.

I don't think this actually makes any difference, given what the compiler
produces, but it makes me a bit happier.

Bugfix candidate.

allow "testlist1" to be snagged.

Trivial fix to the pep277 checkin: ensure that exceptions always have a filename attribute (previously did only when string filenames were passed, but not when unicode)

enough to fit in one line.

patch #617312, both on the trunk and the 22-maint branch.

Also added a test case, and ported the test_trace I wrote for HEAD
to 2.2.2 (with all those horrible extra 'line' events ;-).

CCompiler may rely on the presence of self.verbose (SciPy's distutils
appears to).

they'll end up in the right directory when --dir is used.

needs to be expanded by mkhowto, since the shell won't touch it except
at the start of the complete argument.