plague enhancements...

[Dan Williams]

Hi,

I've committed code to include the last 20 lines of the relevant build logs in 
the failure email.  Should make it a bit easier at first glance to find out what 
went wrong.

Second, the build system is aware of what targets (and what arches on those 
targets) the builder can actually do, which means we now deal with noarch 
packages correctly in a build system as complex as Extras, with lots of targets 
and lots of arches.

This _does_ mean that you have to specify the same target names (ie, 
"development" not "devel") as is used in the mock config file names in 
/etc/mock.  If you want to alias anything, do it in whatever you call 
plague-client with.  I'm not really inclined to add target alias support to the 
server itself (other than the CVS target aliases where its actually necessary).

Dan