allow custom src locations

classes = [('HNurbs', ['../hbs/src/HNurbs.cpp', '../hbs/include/HNurbs.h'])]
fix custom hdrfiles paths and add support for explicit language declaration
Fix pull request comments
Merge branch 'custom_src_paths' of github.com:tewk/xdress into srcs
ripped out the hdr interface
rewrote apiname and ensure_apiname()
debug fix
some chenages for the new apiname
Added sidecars to apiname
fixed testing error in py3.3
some more apiname fixes
rmd srcdir, going to dinner
updated autoall
fixed warning reporting
refactored autodescribe's register_classes()
refactored sidecar file loading
more apiname updates
some more updates
can make it through autodescribe now.
more name updates