present) that refers to the section name.  Also added a (slightly)
better InterpolationError error message, which includes the raw
string.

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.