Remove extraneous typedef of Class, which conflicts with Tcl's use of it in some compilers. We never used that type name.
Remove extraneous typedef of Class, which conflicts with Tcl's
use of it in some compilers. We never used that type name.

bk: 530662a7UVsBNH32hIXxitinbpY0yw
bitkeeper-scm/bitkeeper,bitkeeper-scm/bitkeeper,bitkeeper-scm/bitkeeper,bitkeeper-scm/bitkeeper,bitkeeper-scm/bitkeeper,bitkeeper-scm/bitkeeper,bitkeeper-scm/bitkeeper,bitkeeper-scm/bitkeeper,bitkeeper-scm/bitkeeper,bitkeeper-scm/bitkeeper,bitkeeper-scm/bitkeeper,bitkeeper-scm/bitkeeper