MSC: void _searchenv( char *fname, char *var, char *path )

	- prototype in stdlib.h

	- searches for "fname" in environment variable "var"
	- fname = name of file to search for
	- var = environment variable to use for search
	- path = receives path if file found
	- attempts to locate filename using MS-DOS file search strategy

	- Turbo C uses searchpath()