ecxx-cmake: Added condition to compile examples only when ECXX_USE_EO1.
ecxx-include: Renamed eo_version_N.hh => eo_version_N_ops.hh.
ecxx-lib: Enabled generation of eo_class_detail.
ecxx-include: Initial Eo-1 port.
ecxx-examples: Started improving the examples.

(unfinished).
ecxx-examples: Added efl_eo_inherit_01 example.
ecxx-include: Sync'd inherit.hh with latest Eo2 API.
ecxx-include: Added function class_args::size().
ecxx-include: Eo.h now only included on detail/impl/* files.
ecxx-include: Fixed wrong namespacing.
Remote stashing... :) Please amend-me.
ecxx-include: Added inherit_bindings.hh and its corresponding impls.

i.e.,:
src/include/ecxx/detail/impl/eo_version_1_bindings.hh
src/include/ecxx/detail/impl/eo_version_2_bindings.hh
ecxx-include: Added <ecxx/config.hh>.
ecxx-build: Deprecated ECXX_USE_EO1. Introduced ECXX_EO_VERSION.
ecxx-include: Removed inherit_eo.hh.
ecxx-include: Removed ecxx/detail/impl/inherit_eo_version_*.hh.
ecxx-include: Added eo_macro_add_custom.
ecxx-include: Reflected new names in all headers.
ecxx-include: Moved inherit's detail namespace.
ecxx-include: Fixed error message.