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Changes between Initial Version and Version 1 of Ticket #524, comment 1

initial	v1
1		To make the function thread-safe, the function's signature will need to change. The function will:
	1	To make the function thread-safe, the function's signature will need to change. The new function will:
2	2	1) return the return code from !DosSearchPath (instead of returning a pointer to a static array as the current code does).
3	3	2) require an additional parameter: a pointer to where the function should copy the full filename if the search was successful. Since many calls to the search*path functions do not use about the actual filename, this additional parameter can be set to NULL.