Updates to PPC Binding in Version 1.6

These notes are provided by the document editor.

• Section 1.6
• Added new section to describe CPUS node
• Added reg property to CPU nodes
• Section 9.6.2 Virtual Address Translation assist callbacks
• Added throw-code to all return stacks.
• Made return stack from Translate variable depending on error value
• Section 7.1
  • Added paragraph about default value for mode argument per Item 282. Note: rephrased text to not mention "mmu package" because there isn't one.
• New Section 9.1.2 "Handling ELF-format Client Programs"
• Enhanced description of interpreting the header of an ELF-Format client per Item 259.
• Updated Section 12 "MP Extensions"
• Added Table Of Contents and other Boilerplate:
  • Added Revision History
  • Added Trademarks section