[Rpm-metadata] new stuff

[seth vidal]

Hi,
 updated rpm-md-dump.py -
   - partial changelog support into other.xml - need to clean up the
changelogname field b/c it includes that partial e-v-r SOMETIMES.
   - changed BuildHost to buildhost
   - fixed the size tag to say package, not rpm for the size of the
package file :)
   

uploaded importmetadata.py -
  - takes one argument - path to base.xml
  - dumps the data (well most of it, so far) into a class - right now it
doesn't keep track of the data in the PackaeList class yet but that is
the plan. Just a structure for parsing and handling. Speed on import
isn't wonderful, but not too bad. for 2300 packages it takes 13s to read
through the data and bring it into the class structure(s). I need to run
timeit on this, see where I'm spinning the most.

the importmetadata.py thing isn't terribly critical for the metadata
generation but it is something I needed to do and maybe someone else on
here will find it useful. I've split the classes into a base class
(PackageObject) and a derived class (RpmObject). Arguably a DebObject
derived class could plug right in there and capture deb pkg metadata as
well.

suggestions on things I'm doing stupidly or, of course, compliments,
welcome ;)

-sv