ChangeLog.7: Fix comment typos.

ChangeLog.7: Fix comment typos.

	* ChangeLog.7: Fix comment typos.
	* c-common.c: Likewise.
	* c-pretty-print.c: Likewise.
	* cgraphunit.c: Likewise.
	* et-forest.h: Likewise.
	* expr.c: Likewise.
	* gcse.c: Likewise.
	* genautomata.c: Likewise.
	* genrecog.c: Likewise.
	* gensupport.c: Likewise.
	* ggc-zone.c: Likewise.
	* haifa-sched.c: Likewise.
	* ifcvt.c: Likewise.
	* loop.c: Likewise.
	* optabs.c: Likewise.
	* pretty-print.h: Likewise.
	* regrename.c: Likewise.
	* rtl.h: Likewise.
	* sched-rgn.c: Likewise.
	* target.h: Likewise.
	* value-prof.c: Likewise.
	* web.c: Likewise.

From-SVN: r73795