NAME
	FindSemaphore -- find a given system signal semaphore

   SYNOPSIS
	signalSemaphore = FindSemaphore(name)
	D0		                A1

	struct SignalSemaphore *FindSemaphore(STRPTR);

   FUNCTION
	This function will search the system signal semaphore list for a
	semaphore with the given name.	The first semaphore matching this
	name will be returned.

	This function does not arbitrate for access to the semaphore list,
	surround the call with a Forbid()/Permit() pair.

   INPUT
	name - name of the semaphore to find

   RESULT
	semaphore - a pointer to the signal semaphore, or zero if not
		    found.

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