make check under Cygwin (3.99.93)

[Denis Excoffier]

Hello,

Thank you for this new RC.

I have tested make-3.99.93 under cygwin 32 bits with --disable-load
(and without the spawn-patch).

Several items that i had reported in
http://lists.gnu.org/archive/html/bug-make/2013-09/msg00110.html
(and for which i didn't get any feedback) are still there.

I'm especially asking for
- item 1 (duplication of "$code != -1") and
- item 3 (jobserver test fails if HOME is not set)
- and, if possible, implementation of ${abspath /foo} == /foo

Also, for information with the spawn-patch, the output-sync test still
fails (like for 3.99.92, this is not unexpected), but now (with 
3.99.93)
the GNUMAKEFLAGS test also fails.

Regards,

Denis Excoffier.