Add support for Cygwin64, which has a 64-bit "long" type. 
Binary compatibility with win64 requires that all stub entries use 32-bit long's, therefore the	need for various wrapper functions/macros. 
For Tcl 9 a better solution is needed, but that cannot be done without introducing binary incompatibility.
Add support for Cygwin64, which has a 64-bit "long" type. 
Binary compatibility with win64 requires that all stub entries use 32-bit long's, therefore the	need for various wrapper functions/macros. 
For Tcl 9 a better solution is needed, but that cannot be done without introducing binary incompatibility.