Nick Briggs 4834f6f2b1 Eliminate various warnings from vmemsave.c/vmemsavedefs.h ...

* sort_fptovp() and twowords() can be static and are sometimes (depending on flags)
   not needed at all
 * roundup() macro is unused and can be removed
 * maxpages can be unsigned (affects main.c)
 * variables used for return values of system calls should be correctly declared
 * pointers into Lisp_world should be DLword* rather than char*, and
   computations must take that into account.
 * ENOSPC and EDQUOT errors on write should return NOFILESPACE instead of FILECANNOTWRITE error.

2023-02-17 17:01:27 -08:00

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