Book Update: Miscellaneous

I have updated the Parallel Programming with OmniThreadLibrary book with the Miscellaneous chapter. The book is now almost complete!

Changelog:

• Documented TOmniMessageQueue.
• Documented TOmniTwoWayChannel.
• Documented TOmniValueContainer.
• Documented TOmniCounter.
• Documented TGp4AlignedInt and TGp8AlignedInt.
• Documented TOmniRecordWrapper.
• Documented IOmniAutoDestroyObject.
• Documented IOmniEnvironment.
• Documented examples.