Increasing word boundaries via re-camel

Felt that the E's were making it difficult to detect work boundaries.

Re-cased the letters to mark work boundaries, using the first CamelCase
example from the Google Java Style Guide as a guide:

"XML HTTP request" -> XmlHttpRequest

Note: also changed Excutables to Executables.

Change-Id: Ibb7ac4fa70b6436ba19cb06a47cc50554a224170