Andy Balholm's NSUndoManager changes
Andy Balholm's NSUndoManager changes

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