Script for making mext package template.
	new file:   make_mext.pl
add a test and renumber
	modified:   numerical/rtests/rtest_numerical.mac
reorganized tpsolve, split to_poly, added fourier_elim.
quiet grobner.
informative error message
	modified:   mext_system/ibuild.mac
document mext_verbose
	modified:   mext_defmfun1/mext_defmfun1_code.lisp
new function doc_system_set()
fix type_of , and accomodate gcl
don't need tpsolve yet
	modified:   numerical/numerical.mac
add different levels of loading mext, mext1, mext2,...
ccl caught typo error
	modified:   lists_aex/lists_aex.system
	new file:   lists_aex/rtests/rtest_strings.mac
add doc
	modified:   mext_defmfun1/mext_defmfun1_code.lisp
fix spurious 'remaining' in  "Each of the remaining ..."
	modified:   defmfun1/maxdoc.lisp
add function lisp_type_symbol()
improved these
	modified:   runtime/rtests/rtest_runtime.mac
	modified:   runtime/runtime.lisp
disabled tests for gcl
	modified:   tpsolve/rtests/rtest_to_poly_solve.mac
renumber rtests
document list_type_symbol()
fix test scripts for mext3, etc.
test for gcl in test script
	modified:   test_essential.mac
	modified:   testall1.mac
	modified:   tpsolve/rtests/rtest_to_poly_solve.mac
fix rtest to agree with new timing
	modified:   runtime/rtests/rtest_runtime.mac