Also added two XXX comments about lingering thread unsafeness.

However two string literals concatenated are fine!
Hope this doesn't break other platforms.

ERROR_FILE_NOT_FOUND, return an empty list instead of raising an
exception.

function had a reference to vPySys_WriteStderr(...) -- turn it back
into fprintf(stder, ...).

	command line.

l2hoption():  Convenience function, to write out an option to the aux. init.
	file only if set.

Added --iconserver option to set the $ICONSERVER variable in latex2html; this
requires the use of an auxillary init. file since this can't be initialized
using a standard latex2html command-line option.  So the aux. init. file is
used for just about all the special options since it has to be written anyway
when $ICONSERVER needs to be set.

gethostbyaddr().  (Plain gethostbyname() returns only the IP address.)
This moves the code shared by gethostbyaddr() and gethostbyname_ex()
to a subroutine.

Original patch by Dan Stromberg; some tweaks by GvR.

	need for each to vary independently.

DOS (as well as OS/2).  I presume that making a call to putenv() with
a lowercase key will actually do the right thing.  I know this is so
on Windows/DOS, and I expect it is so OS/2 -- but the old OS/2 code
didn't assume this.  (I don't know if the person who provided the OS/2
patch was clueless or just didn't care about DOS and Windows.)

Also ripped out the support for pickling -- as of 1.5, this is no
longer needed to make pickling work.

I did some bugfixes, and fixed a major problem with the esmtp suport (I
think the person who did that part misunderstood RFC1869) Some of the
interface fer esmtp-related things has changed as a result.

I also added some documentation to the SMTP class' docstring.

get rid of redundant error check.

status inspection" macros as functions: WEXITSTATUS(), WIFEXITED(),
WIFSIGNALED(), WIFSTOPPED(), WSTOPSIG(), WTERMSIG().