install.tex: Document profiledbootstrap.

install.tex: Document profiledbootstrap.

	* install.tex: Document profiledbootstrap.

	* Makefile.tpl (profiledbootstrap): New target.
	* Makefile.in (profiledbootstrap): New target.

	* Makefile.in (clean, distclean): Kill new stages
	(POSTSTAGE1_FLAGS_TO_PASS): Break from ...
	(STAGE2_FLAGS_TO_PASS): ... this one.
	(STAGEPROFILE_FLAGS_TO_PASS, STAGEFEEDBACK_FLAGS_TO_PASS): New.
	(stage[2-4]_build): Add POSTSTAGE1_FLAGS_TO_PASS.
	(stageprofile_build, stageprofile_copy, stagefeedback_build,
	stagefeedback_copy): New.
	(restageprofile, restagefeedback, stageprofile-start,
	stageprofile, stagefeedback-start): Likewise.

	* Make-lang.in:  Add support for stageprofile and stagefeedback

From-SVN: r67498