Document the following __FreeBSD_version values:
  - 903502
  - 1000712, 1000713, 1000714
  - 1100024, 1100025, 1100028, 1100029

While here, get rid of a stray blank line.

Sponsored by:	The FreeBSD Foundation


git-svn-id: svn+ssh://svn.freebsd.org/doc/head@45518 c2e8774f-c49f-e111-b436-862b2bbc8956