edb-debugger - server: Adjust BreakCountKey so that it can be properly

Log Message:
-----------
Adjust BreakCountKey so that it can be properly cast from BreakpointKey.
Fix an off-by-one error when checking parameters to pldbg_set_global_breakpoint. This only seemed to show up on VC++
buildswhere global breakpoints wouldn't be hit, apparently because the backend PID of the debugger was set to 0 in the
breakpointrather than -1. 
Fix the size allocated to BreakCountKey in the BreakCount hash table (it was sizeof(OID).

Modified Files:
--------------
    server:
        globalbp.h (r1.1 -> r1.2)
        (http://cvs.pgfoundry.org/cgi-bin/cvsweb.cgi/edb-debugger/server/globalbp.h.diff?r1=1.1&r2=1.2)
        pldbgapi.c (r1.3 -> r1.4)
        (http://cvs.pgfoundry.org/cgi-bin/cvsweb.cgi/edb-debugger/server/pldbgapi.c.diff?r1=1.3&r2=1.4)
        plugin_debugger.c (r1.5 -> r1.6)
        (http://cvs.pgfoundry.org/cgi-bin/cvsweb.cgi/edb-debugger/server/plugin_debugger.c.diff?r1=1.5&r2=1.6)