XSB Src (SVN)-old

Found more uses of reg_term instead of ctop_arg.
(Several builtins not tested in the testsuite :(

Added bi_instr to call a builtin with arguments in specified registers.
Compiler generates this new instruction for most builtins (with 1-4 arguments.)
Also added new instruction, unikavars(K), to do a sequence of consecutive
uniavar's in one instruction.

asm_inst.P (unikavars(K) and bi_instr)
builtin.H ((is_)builtin_instr) +
builtin.P (many diffs, def of builtin_instr/3)
inprog.H (import is_builtin_instr)
inprog.P (cvt goal to inlinegoal for bi_instrs)
peephole.P (gen unikavars)
tpinline.H (import builtin_instr)
tpinline.P (generate bi_instr instructions)
tprog.H (import warning)
tprog.P (warning and some tbody)

Changes to support new bi_instr instruction to allow some builtins to take
arguments from specified registers (instead of always from 1-n).

machine.H (internhash test)
machine.P (perf on term_new_mod and internhash test)
standard.P (functor/4 performance)
std_xsb.P (cleanup: removed dupls)
tables.H (export get_delay_lists/2)
xsb_read.H (export read_tokens/5)

Changes to support addition of bi_instr instruction to allow (some) builtins
to take their arguments from specified registers (instead of always from
reg 1-n).

builtin.c (all ctop/ptoc reg_term for bi_instr)
context.h (for biargs on multithread)
dis.c (for bi_instr disassembly)
emudef.h (decl of biarg and bioldarg[])
emuloop.c (unikavars and bi_instr, and no deref)
gc_mark.h (added case for RRRR)
inst_xsb.h (added bi_instr and unikavars, and RRRR)
loader_xsb.c (sep fix for cygwin toupper)
ptoc_tag_xsb_i.h (builtin arg access)
std_pred_xsb_i.h (minor fix to avoid arity var confusion)
system_xsb.c (added windows get_tmp_filename def)
xsb_inst_list.h (2 new instrs)

Updated so that the diffs work for the mt test.

A number of changes to make the MT engine compile cleanly.

Closing file descriptors and backed out the change for Linux.

Applied one of Edward Schwartz's patches so incremental tabling will properly work when XSB is called via C.

Changed use of tempnam with mksfile, since tempnam has a security hole.

Improved documentation slightly.