Facebook iOS SDK 3.5.2

Summary:
     Bug fixes. See https://developers.facebook.com/ios/change-log-3.x/

Reviewed By: jacl

Test Plan: Release Testing.
Facebook iOS SDK 3.5.3

Summary:
     Bug fixes. See https://developers.facebook.com/ios/change-log-3.x/

Reviewed By: jacl

Test Plan: Release Testing.

@update-submodule: vendor/OCMock
Facebook iOS SDK 3.6

Summary:
     see https://developers.facebook.com/ios/change-log-3.x/

    Upgrading from 3.5
     https://developers.facebook.com/docs/tutorial/iossdk/upgrading-from-3.5-to-3.6

Reviewed By: jacl

Test Plan: Release Testing.
Facebook iOS SDK 3.7

Summary:
     see https://developers.facebook.com/ios/change-log-3.x/

    Upgrading from 3.6
     https://developers.facebook.com/docs/tutorial/iossdk/upgrading-from-3.6-to-3.7

Reviewed By: jacl

Test Plan: Release Testing.
Facebook iOS SDK 3.7.1

Summary:
    Bug fixes. See https://developers.facebook.com/ios/change-log-3.x/

Reviewed By: jacl

Test Plan: Release Testing.
Fix some namespace pollution in the static library.

This fixes namespace pollution, to prevent linker issues with apps and other
libraries with global symbols named eg. "kSDK".

Conflicts:
	src/FBLoginView.m
	src/FBRequestConnection.m
Prefix defaultResultsLimit and defaultRadius.

These symbols are exported into the static library, so make sure they're prefixed
to avoid namespace collisions.

Conflicts:
	src/FBPlacePickerViewController.m
Update src/FBDataDiskCache.m

'DISPATCH_QUEUE_PRIORITY_BACKGROUND' is not supported in iOS 4.0, only 5.0. It has been changed to 'DISPATCH_QUEUE_PRIORITY_LOW'
Add a search bar
Fix method name such that the analyzer doesn't throw

Conflicts:
	src/FBRequestConnection.m
Always renew the access token as we can never know if we're old or not