chattr makes cygport slow

[Andrew Schulman]

> Recently I noticed that `cygport finish` has become really slow on some of my
> package source trees. After I run for example
> 
> cygport libargp.cygport finish
> 
> it waits for about 5 minutes without any message to the console, before the
> first "Removing work directory" message appears.
> 
> pstree shows that during this time cygport is waiting for chattr. In
> /usr/bin/cygport I see:
> 
> if [ $OSTYPE = "cygwin" ]
> then
>     chattr -fR +C ${workdir} >/dev/null 2>&1 || true
> fi
> 
> which is trying to make the workdir case-sensitive.
> 
> Whatever the advantages of that are, it can take a long time. Would it be
> possible to skip it at least in the case of "finish"? It seems silly to spend
> all that time fixing up a directory tree that we then turn around and remove
> with rm -rf.

And/or, maybe add a switch to suppress it. I've commented it out of my
/usr/bin/cygport for now, because it makes me wait an extra 5 minutes before
every cygport command, at least on this particular source tree with 12K files in
it.