* include/winbase.h [_WIN32_WINNT >= 0x0501]
(CheckRemoteDebuggerPresent, DebugActiveProcessStop, DebugBreakProcess,
DebugSetProcessKillOnExit): Add functions.
* include/winbase.h [_WIN32_WINNT >= 0x0500] (DeleteTimerQueue,
DeleteTimerQueueEx, DeleteTimerQueueTimer,
DnsHostnameToComputerName[AW]): Add functions.
* lib/user32.def (CheckRemoteDebuggerPresent, DebugActiveProcessStop,
DebugBreakProcess, DebugSetProcessKillOnExit, DeleteTimerQueueEx,
DeleteTimerQueueTimer, DnsHostnameToComputerName[AW]): Add functions.