* gcc.dg/tree-ssa/bool-1.c, gcc.dg/tree-ssa/bool-2.c,
	gcc.dg/tree-ssa/bool-4.c, gcc.dg/tree-ssa/bool-5.c,
	gcc.dg/tree-ssa/bool-6.c, gcc.dg/tree-ssa/bool-8.c,
	gcc.dg/tree-ssa/bool-9.c: Fix comment typos.

From-SVN: r117541