Change [sS]ubLoc to [sS]ubloc.

[Reviewed by sungeun.]

In camelCase, only interior word boundaries should get capitalized.  In
the (abbreviated) word "subloc", "loc" doesn't start a new word, so it
should not be capitalized.


git-svn-id: http://svn.code.sf.net/p/chapel/code/trunk@21942 3a8e244f-b0f2-452b-bcba-4c88e055c3ca