Successfully Unbreak Adobe Reader 7.0.8 for the New Linux Emulator

[Intron is my alias on the Internet]

It's dawning in Beijing now. I'm quite tired. Here, I only summarize
the solution as is. I will write a complete hacking report after a rest.

1. Restore your /sys/compat/linux/linux_file.c to the original revision
    1.99 (7.0-CURRENT) if you have applied my yesterday's patch. You have
    two convenient ways to do this:

    1) Overwrite linux_file.c with linux_file.c.orig backuped by patch(1)

    OR

    2) Download the revision 1.99 from:
http://www.freebsd.org/cgi/cvsweb.cgi/src/sys/compat/linux/linux_file.c

2. Apply my new patch for /sys/compat/linux/linux_file.c:
       http://ftp.intron.ac/tmp/linux_file.c.2.diff

3. Recompile and reload the module linux.ko.

4. sysctl compat.linux.osrelease=2.6.16

5. Remove ~/.adobe/Acrobat/7.0/UserCache.bin if something troubles you.

My brain is a little foggy now. If I make something wrong, please do not
laugh at me.

Screenshots:

1. FreeBSD Developers' Handbook, Chinese version:

   http://ftp.intron.ac/tmp/adobereader-20070104-1.png

2. Unicode 4.1 Code Charts, a page for ancient Chinese characters:

   http://ftp.intron.ac/tmp/adobereader-20070104-2.png

3. The English novel Jane Eyre (got from http://www.planetpdf.com/):

   http://ftp.intron.ac/tmp/adobereader-20070104-3.png

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                                                From Beijing, China