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.
Merge branch 'master' of https://github.com/facebook/facebook-ios-sdk

Conflicts:
	src/FBSession.m
	src/ImageResources/FBDialog/FBDialogClose.png
	src/ImageResources/FBDialog/FBDialogClose@2x.png
	src/ImageResources/FBFriendPickerView/FBFriendPickerViewDefault.png
	src/ImageResources/FBProfilePictureView/FBProfilePictureViewBlankProfilePortrait.png
	src/ImageResources/FBProfilePictureView/FBProfilePictureViewBlankProfileSquare.png