Updates to fix warnings in recent compilers

git-svn-id: http://gdata-objectivec-client.googlecode.com/svn/trunk@727 f334b912-182a-0410-b59a-f50d4d03ee1a
Fix a few more format string warnings for Xcode 4.4

git-svn-id: http://gdata-objectivec-client.googlecode.com/svn/trunk@728 f334b912-182a-0410-b59a-f50d4d03ee1a
Update sample app comments to point to API replacements

git-svn-id: http://gdata-objectivec-client.googlecode.com/svn/trunk@729 f334b912-182a-0410-b59a-f50d4d03ee1a
Updated utilities method MIMETypeForFileAtPath: for newer compilers; renamed fetcher -ticket category as -GDataTicket

git-svn-id: http://gdata-objectivec-client.googlecode.com/svn/trunk@730 f334b912-182a-0410-b59a-f50d4d03ee1a
Add deprecation comment to YouTube sample app

git-svn-id: http://gdata-objectivec-client.googlecode.com/svn/trunk@731 f334b912-182a-0410-b59a-f50d4d03ee1a
Support stronger compiler type checks.

git-svn-id: http://gdata-objectivec-client.googlecode.com/svn/trunk@732 f334b912-182a-0410-b59a-f50d4d03ee1a
Remove GCC_ENABLE_OBJC_GC and JSON file references from GData project file

git-svn-id: http://gdata-objectivec-client.googlecode.com/svn/trunk@733 f334b912-182a-0410-b59a-f50d4d03ee1a
Update SpreadsheetSample ReadMe to remove advocacy of the tables & records API.

git-svn-id: http://gdata-objectivec-client.googlecode.com/svn/trunk@734 f334b912-182a-0410-b59a-f50d4d03ee1a
Update GDataDateTime time zone handling; update project files.

git-svn-id: http://gdata-objectivec-client.googlecode.com/svn/trunk@735 f334b912-182a-0410-b59a-f50d4d03ee1a
Fix paths for svn:external directories

git-svn-id: http://gdata-objectivec-client.googlecode.com/svn/trunk@736 f334b912-182a-0410-b59a-f50d4d03ee1a
Fix some format string types in ContactsSample

git-svn-id: http://gdata-objectivec-client.googlecode.com/svn/trunk@737 f334b912-182a-0410-b59a-f50d4d03ee1a