function to search through `load-path'.) It searches for FILENAME
through PATH-LIST, expanded by one of the optional SUFFIXES
(string of suffixes separated by `:'s), checking for access MODE
- (0|1|2|4 = exists|executable|writeable|readable), default readable.
+ (0|1|2|4 = exists|executable|writable|readable), default readable.
`locate-file' keeps hash tables of the directories it searches
through, in order to speed things up. It tries valiantly to not