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

Log Message:
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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++ builds where global breakpoints wouldn't be hit, apparently because the backend PID of the debugger was set to 0 in the breakpoint rather than -1.
Fix the size allocated to BreakCountKey in the BreakCount hash table (it was sizeof(OID).

Modified Files:
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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)