[C2hs] Patch: Don't lowercase existing CamelCase

Agar (http://libagar.org) uses AG_FunctionFoo as naming convention and I like to write hooks of the form {#fun FunctionFoo as ^ ... #} As it stands, though, c2hs-0.15.1 will lowercase the second F, unnecessarily. I attached a patch against c2hs/chs/CHS.hs that fixes this... I'm not completely sure of it, though, as apathToIdent looks like it could be important. Anyway, for me the patch does what it's supposed to do. -- (c) this sig last receiving data processing entity. Inspect headers for copyright history. All rights reserved. Copying, hiring, renting, performance and/or quoting of this signature prohibited.