XSB Src (SVN)-old

added base64.* for base64 encoding/decoding
curl package: headers, put, post
fixed latex bugs in manual2 - viewsys, persistent tables

returned tempfilename to before Teri's changes because her implementation is not equivalent

Fixed psc_mod builtin to return usermod-psc instead of 0.

Fixed a couple of erroneous imports: should not be from usermod.

Ditto of last message.

Finishing port of new builtin compilation to MT.

Changed test_declarations to be consistent for MT engine, and moved
some others over to nonmt (i.e., in the directory of those tests that
need to be ported to MT).

Added reset of biarg mapping to default after return in bi_instr, and before
call to foreign function, since foreign functions might use the builtin
argument accessing routines.

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)