nilfs-utils: update nilfs project site

We moved nilfs project site to nilfs.sourceforge.net from
www.nilfs.org.  This updates the site information written in man
pages.

Signed-off-by: Ryusuke Konishi <konishi.ryusuke@lab.ntt.co.jp>
nilfs-utils: bump up version of nilfs-utils in manpages

Signed-off-by: Ryusuke Konishi <konishi.ryusuke@lab.ntt.co.jp>
nilfs-utils: v2.2.0 release

Signed-off-by: Ryusuke Konishi <konishi.ryusuke@lab.ntt.co.jp>
minor man pages lintianisation

 spelling-error-in-manpage
 hyphen-used-as-minus-sign

Signed-off-by: Ryusuke Konishi <konishi.ryusuke@lab.ntt.co.jp>
nilfs_cleanerd: link libraries statically

Make nilfs_cleanerd self-contained in /sbin directory.

Signed-off-by: Ryusuke Konishi <konishi.ryusuke@lab.ntt.co.jp>
install nilfs-* executables to /usr/sbin

 Fixes the following problems (thanks, `adequate`):
  bin-or-sbin-binary-requires-usr-lib-library
    /sbin/nilfs-clean => /usr/lib/x86_64-linux-gnu/libnilfscleaner.so.0
    /sbin/nilfs-clean => /usr/lib/x86_64-linux-gnu/libnilfs.so.0
    /sbin/nilfs-resize => /usr/lib/x86_64-linux-gnu/libnilfs.so.0
    /sbin/nilfs-resize => /usr/lib/x86_64-linux-gnu/libnilfsgc.so.0
    /sbin/nilfs-tune => /usr/lib/x86_64-linux-gnu/libnilfs.so.0
    /sbin/nilfs_cleanerd => /usr/lib/x86_64-linux-gnu/libnilfs.so.0
    /sbin/nilfs_cleanerd => /usr/lib/x86_64-linux-gnu/libnilfsgc.so.0

Signed-off-by: Ryusuke Konishi <konishi.ryusuke@lab.ntt.co.jp>
nilfs-utils: fix typos in ChangeLog file

Signed-off-by: Ryusuke Konishi <konishi.ryusuke@lab.ntt.co.jp>
nilfs-utils: fix typos in manpages

Fix typos in man/mount.nilfs2.8 and man/nilfs-resize.8.

Signed-off-by: Ryusuke Konishi <konishi.ryusuke@lab.ntt.co.jp>
nilfs-utils: fix typos in messages

Fix typos in messages of nilfs-resize command, lssu command, and
libnilfsgc.

Signed-off-by: Ryusuke Konishi <konishi.ryusuke@lab.ntt.co.jp>
nilfs-utils: fix typos in source files

Fix typos in source files of mkfs.nilfs2, nilfs_cleanerd,
mount.nilfs2, nilfs-clean, include/nilfs.h, and lib/gc.c.

Signed-off-by: Ryusuke Konishi <konishi.ryusuke@lab.ntt.co.jp>