invoke.texi (sched-pressure-algorithm): Document new --param.

invoke.texi (sched-pressure-algorithm): Document new --param.

gcc/
	* doc/invoke.texi (sched-pressure-algorithm): Document new --param.
	* common.opt (fsched-pressure-algorithm=): Remove.
	* flag-types.h (sched_pressure_algorithm): Move to...
	* sched-int.h (sched_pressure_algorithm): ...here.
	* params.def (sched-pressure-algorithm): New param.
	* haifa-sched.c (sched_init): Use it to initialize sched_pressure.
	* common/config/s390/s390-common.c (s390_option_optimization_table):
	Remove OPT_fsched_pressure_algorithm_ entry.
	* config/s390/s390.c (s390_option_override): Set a default value for
	PARAM_SCHED_PRESSURE_ALGORITHM.

From-SVN: r188258