Help:how to install .diff files on FreeBSD 6.2

[冉俊秀]

Hello,
I am a freshman in FreeBSD  OS.
I have downloaded some    libcap_1.10-14.diff.gz
<http://download.chinaunix.net/download.php?id=11494&ResourceID=5757>
and   libcap-1.10.tar.bz2
<http://download.chinaunix.net/download.php?id=11495&ResourceID=5757>
.The
instruction says  it can be installed on FreeBSD. But I don't know how to
install it as it seems different from Fedora Core.Could someone help me,and
give me the entire code?
Many thanks.


-- 
Beyond4ever