Correct spelling is "Christiaan Huygens".

Submitted by:	James J. Lippard
Obtained from:	OpenBSD
LSD first synthesised 16/11/38, not 7/4/43.

Submitted by:	James J. Lippard
Obtained from:	OpenBSD
Fix typo from previous commit.

Submitted by:	Ronald Klop <ronald-freebsd8@klop.yi.org>