NAM — case-sensitivity in comparing interoperable names

while reading the Interoperable Naming specification (orbos/98-10-11), I
looked in vain for any mention of whether the comparison of names for
equality is done in a case-sensitive way or not. I suspected that it is
case-sensitive (and personal communication with Michi Henning confirmed
this), but I think the specification would gain preciseness if this was
stated clearly. This might be addressed by the FTF which I think is currently
active.

Add clarification text.