Implement Tcl_NewBooleanObj, Tcl_DbNewBooleanObj and Tcl_SetBooleanObj as macros using Tcl_NewIntObj, Tcl_DbNewLongObj and Tcl_SetIntObj. 
Starting with Tcl 8.5, this is exactly the same, it only eliminates code duplication.
Split ChangeLog in 3 parts, just as already done on trunk
Implement Tcl_NewBooleanObj, Tcl_DbNewBooleanObj and Tcl_SetBooleanObj as macros using Tcl_NewIntObj, Tcl_DbNewLongObj and Tcl_SetIntObj. 
Starting with Tcl 8.5, this is exactly the same, it only eliminates code duplication. 
Eliminate use of NO_WIDE_TYPE everywhere: It's exactly the same as TCL_WIDE_INT_IS_LONG