Update the Mongolian translation of the Handbook.

MFen:

1.79 ->  1.85 mn_MN.UTF-8/books/handbook/bibliography/chapter.sgml

1.374 -> 1.380 mn_MN.UTF-8/books/handbook/install/chapter.sgml

1.41 ->  1.43 mn_MN.UTF-8/share/sgml/trademarks.ent

Submitted by: ganbold at micom.mng.net