Hi-Tech API changes

The API has changed recently to remove confusion over what is done.
The change is backwardly compatible, so the API and standalone programs will still recognise the old option name.
Summary of changes:

  1. 'encrypt' has been renamed 'obfuscate'.
  2. 'blockdecompile' has been removed. (Functionality similar to blockdecompile is automatically enabled when obfuscate is selected.)