Updated pengines
ADDED: library(sandbox): support freeze/2.
INSTALL: MinGW: fixed lacking dependency, causing concurrent make to fail.
Roberto Bagnara.
ADDED: library(sandbox): allow for :- style_check/1.
Updated pengines
Don't test fpclassify, it's always a macro per POSIX.

Hi,

per POSIX, fpclassify is a macro:
http://pubs.opengroup.org/onlinepubs/9699919799/functions/fpclassify.html
Also, the usage of fpclassify in pl-arith.c and pl-write.c already assumes
that fpclassify is a macro as well.  The below patch just removes the test
for fpclassify from configure.in.

Corinna
Drop unused ldcygwin

Hi,

this patch simply removes the ldcygwin script.  It's old and unused.

Thanks,
Corinna
Modernize README.cygwin

Hi,

the below patch revamps the README.cygwin file slightly to keep up with
reality.

Note:  It already contains a few filename and path changes which are not
yet in the repo.  I'm working on the required patches and will be able
to send them today or tomorrow, I hope.

Jan, in terms of the Drawback section, I retained it, just rephrased
a bit to be more neutral.

Thanks,
Corinna
Fix copy-paste error in README.cygwin

Sorry, I had a copy-paste error in the previous patch.  libswipl.dll is
installed under bin, not lib.

Corinna
Updated xpce