Add .obj files to .gitignore.
Change var name to `klass` for C++ compat.
Define parcel privacy macros before including XSBind.h
Force some bool values to true/false.
Search all of @INC for library files

Needed to make the Lucy build work on Windows if Clownfish is
in a non-standard location.
Windows batch file to setup dev environment
Fix mixed decs and code in custom XS.