documented gethostname() and a few misc things

listtree.py: "Print" -> "List" in description

	no need for the stdin handler, a Tk_DoOneEvent(TK_DONT_WAIT) did
	the trick.  I've included a diff to tkintermodule.c.

libstring.tex: added count().
ref2.tex: new keywords; moved keyword printing program to keywords.py.

	proper argument

	* Lib/{bdb,cmd,pdb}.py: Mods by Rickard Westman: No longer barfs
	on lambda:s (outputs "<lambda>" as the function name); "a(rgs)" in
	pdb now works; help messages added to pdb (lifted from pdb.doc).
	Also, "h pdb" calls pdb.help().  cmd.do_help() displays topics on
	a nicer way (I think).  Also, topics for which there is a help_
	method, but no do_method (like "pdb" above) are displayed in a
	special way.  My own mod: fix break on function to also support
	methods.

posixmodule.c: use pclose, not fclose!
selectmodule.c: trap negative fileno's, change some error messages.
stropmodule.c: change semantics of rindex to match string.py.

configure*: don't check for strtod!

folders, then fix minor bugs and remove debug print statement.  Also
needs a fix to mhlib.py

open relevant dialogs on double click

Added readonly options, used for .class field.

baseName.

switching states each time we insert some text but has to be done this way
since else class bindings might allow editing...)

into *.[ln123456789]