Renaming for libCellML
Renaming to use libCellML.

Also, simplified use of camel case so that libcellml is used consistently as a single entity.
Including generated output for convenience.

To generate:
omniidl   -bsimple_cpp -K -Iinterfaces -p/somepath/cellmlapi/simple_interface_generators/omniidl_be /somepath/cellmlapi/interfaces/libcellmlStarter.idl

To get omniidl, try "brew install omniorb" or "sudo apt-get install omniidl" (or omniidl4), or windows binaries from http://omniorb.sourceforge.net/download.html