MFC r346571,r346572:

Update the spelling of my name

Previous spellings of my name (NGie, Ngie) weren't my legal spelling. Use Enji
instead for clarity.

While here, remove "All Rights Reserved" from copyrights I "own".

MFC r315775:

Add a post-humous manpage for cd9660(5), the ISO-9660 file system

Describe (briefly) how to compile the filesystem into the kernel and
load as a module.

Reference cd9660(5) in mount(8) and mount_cd9660(8).