Better implementation of NSDocumentController backward compatibility checks
Better implementation of NSDocumentController backward compatibility checks

cyclaero/cocotron,plasq/cocotron,plasq/cocotron,crystax/android-vendor-cocotron,guestOS/guestOS,guestOS/guestOS,cneira/cocotron,ruppmatt/cocotron,Suninus/cocotron,ruppmatt/cocotron,plasq/cocotron,crystax/android-vendor-cocotron,cjwl/cocotron,ruppmatt/cocotron,cneira/cocotron,yuhangwang/cocotron,gemu2015/cocotron-sierra,crystax/android-vendor-cocotron,cyclaero/cocotron,JackLian/cocotron,cjwl/cocotron,yuhangwang/cocotron,crystax/android-vendor-cocotron,cjwl/cocotron,cyclaero/cocotron,Suninus/cocotron,Suninus/cocotron,yuhangwang/cocotron,guestOS/guestOS,plasq/cocotron,cjwl/cocotron,ruppmatt/cocotron,cneira/cocotron,cyclaero/cocotron,Suninus/cocotron,gemu2015/cocotron-sierra,gemu2015/cocotron-sierra,JackLian/cocotron,guestOS/guestOS,yuhangwang/cocotron,cneira/cocotron,gemu2015/cocotron-sierra,JackLian/cocotron,JackLian/cocotron