[maint] spellling

[Andrew Cagney]

Just a couple quick reminders.

When making updates to fix spelling mistakes then it is still important
to run the testsuite after the changes.  Such changes can affect GDB's
output.  I'd choose a target that has a very low number of failures.

Until GDB gets internationalized, I don't see any point in changing
spelling to either English or American :-)

	appreciate diversity,
		Andrew