Synopsis:

       string=hexitostr(hexi_str)

Arguments:

       hexi_str - The hexadecimal string of ASCII values to convert to a character string

Description:   This function converts a hexadecimal string (where two hex characters represent a single byte) into a character string.

For Example:

       // This will return "012345678"

       string=hexitostr("30313233343536373839")

       // This will return "ABCDEF"

       string=hexitostr("414243444546")

       

Returns:  Returns the character string represented by the hexadecimal string of ASCII values..