2006-06-02 Frank Ch. Eigler <fche@elastic.org>

2006-06-02  Frank Ch. Eigler  <fche@elastic.org>

	PR 2645.
	* stapprobes.5.in: Document "?" probe point suffix.
	* parse.cxx (parse_probe_point): Recognize "?" optional suffix.
	* elaborate.cxx (derive_probes): Observe probe_point->optional.
	* staptree.h, staptree.cxx: Corresponding changes.
	* tapsets.cxx (never_derived_probe, never_builder): New classes.
	(register_standard_tapsets): Support "never" probe point.
	* testsuite/buildok/six.stp, parseok/five.stp: Modifed tests.

	* translate.cxx (emit_module_init): Format "-t" (benchmarking)
	cycle-time reports similarly to "-v" (verbose) times.