Added little prog. that builds the WIN32K.SYS service table

Added little prog. that builds the WIN32K.SYS service table
and the stubs to be used in GDI32.DLL.
Converted to __stdcall every W32k... call in WIN32K.SYS.
Fixed the entry point in GDI32.DLL.
WARNING: the thing compiles, but Jason reports it does not work as is
(he tested a preliminary stub piece of code).
Perhaps changing it (as Phillip proposes) or fixing it to make WIN32K.SYS
work the NT way is required (Hernan, are you there: I did not understand
well how the additional service tables work). Feel free to change it.

svn path=/trunk/; revision=993