Fix error-causing error message for wrong number of args to new()

(%i1) new();
** error while printing error message **
~new: expected exactly one argument; found: ~M
Print correct individual elapsed test suite test times with time=all

When running the test suite with time=all to print time information
on individual tests (e.g., with display_all=true), the same value
was being printed for both the "run" time and the "real" time.
Remove unnecessary use of the #. reader macro in MEVALP

#.(not ())  ->  t
Remove old, unreachable code from $COMPILE

Commit 0a370af9 removed a lot of unused functions and macros, some of
which involved the special variable FORMS-TO-COMPILE-QUEUE.  Commit
dcd1d7ae replaced this special variable with a lexical, present only
in $COMPILE.

However, the lexical FORMS-TO-COMPILE-QUEUE is always NIL so code in
$COMPILE depending on it being non-NIL is unreachable.  So remove the
variable and code which depends on it being non-NIL.

SBCL and CMUCL noticed unreachable code
Improve sum check from zeilberger.
simplify_sum: don't factor the sum differece in sum_check.
Adding a example for lfreeof function.
Merge branch 'master' of ssh://git.code.sf.net/p/maxima/code
Fix system command under xmaxima/wxmaxima on clisp.
Merge branch 'master' of ssh://git.code.sf.net/p/maxima/code