NAME
	extract_array - extract a sub-array from a larger array

SYNOPSIS
	mixed *extract_array(mixed *arr, int from, int to)


DESCRIPTION
	This function will extract the sub-array from arr ranging
	[from..to]. 

	If to is negative, the range will end at sizeof(arr)+to,
	including the element. Indexes out of bounds will conform
	to the boundaries.

SEE ALSO
	efun/arrays/, efun/strings/
