TIMOB-10161: BlackBerry: Implement Ti.Buffer for Anvil [Partial implementation part5]
TIMOB-10161: BlackBerry: Implement Ti.Buffer for Anvil [Partial implementation part5]

Reviewers: DavidL

Changelog:
- Address comments.

Test cases:
- Use the snippets attached to JIRA to test current functionality.

appcelerator/titanium_mobile_blackberry,appcelerator/titanium_mobile_blackberry,appcelerator/titanium_mobile_blackberry,appcelerator/titanium_mobile_blackberry,appcelerator/titanium_mobile_blackberry,appcelerator/titanium_mobile_blackberry