Subject: package install should give better feedback

From: David Reitter <[email-masked]>
Date: Sat, 7 Nov 2015 18:41:40 -0500

When installing a package, give an acceptable “XXX successfully installed” message in the echo area as the last message.
As it is, it seems to just show a “done” for the last dependency, which is confusing or uninformative.

Also, if the *Packages* buffer is present--which it will be because the user may have picked the package to install after doing M-x list-packages—this buffer should be updated to show that the package was installed.

(Observed in master branch, installing JDEE from MELPA.)