[pacman-dev] file owners and symlinks

[Xavier]

bash-3.2$ pacman -Ql jre jdk | grep "/java$"
jre /opt/java/jre/bin/java
jdk /opt/java/bin/java

bash-3.2$ ls -l /opt/java/bin/java
lrwxrwxrwx 1 root root 15 oct  4 22:59
	/opt/java/bin/java -> ../jre/bin/java

bash-3.2$ LANG=C pacman -Qo /opt/java/jre/bin/java
/opt/java/jre/bin/java is owned by jdk 6u3-1

The -Qo operation calls realpath on both sides, and
realpath(/opt/java/bin/java) = /opt/java/jre/bin/java,
so it returns that /opt/java/jre/bin/java is owned by jdk, while in 
fact, jdk only owns a symlink that points to it.

I think that realpath should only be called on the path (== dirname), 
not the whole thing (dirname + basename).
That is, /opt/java/bin/ should be resolved, but not the java symlink itself.

For implementing that, I would need a dirname function though. For 
basename, we have a mbasename function that was grabbed from uClibc 
source. Btw, what is the m for?
And could we have mdirname also?