Correction of Mutex handling in DdeInitializeW for cases other than
1st call. Addition of instance handling to DdeCreateStringHandleA,
DdeCreateStringHandleW, RemoveHSZNodes, FreeAndRemoveHSZNodes.  1st
cut implementation of DdeUnitialize, move of internal structure defs
in from ddeml.h. Removed non-ANSI comment.

1 file changed