Convert C (un)signed long long values to bignums properly. This patch also does the following: - Uses make_fixnum instead of make_integer when the argument is guaranteed to be in the fixnum range. - Introduces make_unsigned_integer so that we handle unsigned values with the high bit set correctly. - Introduces conversions between bignums and (un)signed long long values. - Uses mp_set_memory_functions with the BSD MP code, if it exists. - Eliminates some unnecessary consing in the Lisp + and * implementations. - Fixes a problem with check_valid_xbm_inline(). This function is called during intialization. It calls Ftimes. When using pdump, this is a problem, because (a) the bignum code is not initialized until *after* dumping, so we don't try to dump any bignums, and (b) multiplication of integers is done inside bignums so we handle fixnum overflow correctly. I decided that an XBM file with dimensions that don't fit into fixnums is probably not something we want to try to handle anyway, and did the arithmetic with C values instead of Lisp values. Doing that broke one test, which started getting a different error message from the one it expected, so I adjusted the test to match the new reality. - Fixes a few miscellaneous bugs in the BSD MP code. See <CAHCOHQk0u0=eD1fUMHTNWi2Yh=1WgiYyCXdMbsGzHBNhdqYz4w@mail.gmail.com> in xemacs-patches, as well as followup messages.

This directory contains C header files containing machine-specific
definitions.  Each file describes a particular machine.  The emacs
configuration script edits ../config.h to include the appropriate one of
these files, and then each emacs source file includes config.h.

template.h is a generic template for machine descriptions; it
describes the parameters a machine file can specify.


General XEmacs Changes
----------------------
1. Removed all code dealing with VALBITS and XSET*.  These are handled
   differently in XEmacs.

2. Removed all defines of WORDS_BIGENDIAN.  Now determined by configure.

3. Put #ifndef PURESIZE around all PURESIZE defines so that it can be
   overridden at configure time.

4. Removed all defines of NO_ARG_ARRAY.  The arg-array hack is not
   done in XEmacs. (If you want to put it back, use configure --
   autoconf has a check for this.)

5. Removed all defines of BITS_PER_INT, BITS_PER_LONG -- now
   determined by configure.

See ../s/README for a list of other changes made to the FSF 19.30
configuration files for XEmacs.