* passes.texi (web construction): Document.
* invoke.texi (-O3): Document that -fweb is enabled.
* regrename.c (regrename_optimize): Deal better with situation when
replacement failed.
* sched-ebb.c: Include params.h and profile.h
(schedule_ebbs): Use tracer parameters to discover superblocks
* Makefile.in (sched-ebb.o): Add dependencies.