Cygwin build of 21.5

[Ben Wing]

> I'm not able to build 21.5 on Cygwin using --pdump.  I get 
> the following error message:
> 
> ,----
> | make[2]: Leaving directory 
> `/cygdrive/d/cvs/xemacs-21.5/src' ./xemacs 
> | -no-packages -batch -no-autoloads -l update-elc-2.el -f 
> | batch-update-elc-2 /cygdrive/d/cvs/xemacs-21.5/src/../lisp
> | 
> | Requested 4096 bytes, static heap exhausted!  base is 0x6a8000, 
> | current ptr is 0x9c4000. You have exhausted the static heap.
> | 
> | If you are simply trying to compile, remove sheap-adjust.h and 
> | recompile from the top level. If this doesn't work then 
> | STATIC_HEAP_SLOP (defined in this file) is too small.
> | 
> | If you want to run temacs, change SHEAP_ADJUSTMENT in 
> sheap-adjust.h 
> | to 0 or a +ve number. Generally you should *not* try to run temacs 
> | with a static heap, you should dump first.
> | make[1]: *** [update-elc-2] Error 255
> | make[1]: Leaving directory `/cygdrive/d/cvs/xemacs-21.5/src'
> | make: *** [src] Error 2

This isn't pdump.