takes too long

Adding a TransientComputerActionFactory. Note that the transient actions are never updated, so to make actions appear to be added dynammically you need to always add them and control their display, rather than conditionally add them.  This is the same behaviour as for TransientViewActionFactory but not quite the same behaviour as TransientProjectActionFactory

build early, doesn't work with maven 3 projects

upon failure

fix link to javadoc in maven modules, archiving test javadoc test too , still need to display link to test javadoc

plugins like the rebuild plugin that want to default the parameter input fields with
a previous set of parameter values.  Currently the rebuild plugin has to rewrite the
parameter input display for each core parameter which prevents it from supporting
additional parameter types outside of core.

[FIXED JENKINS-9122] - Archived artifacts overridden when having multiple produced artifacts under different paths but with the same file name

This lets you configure the ping interval for slaves via a
system property. (hudson.slaves.ChannelPinger.pingInterval)

The default ping interval has been lowered from 10 to 5 minutes.

It also moves the ping setup logic into a ComputerListener
(out of the JNLP slave Engine class). As a side effect, all
slaves will now have a ping instead of just JNLP slaves.

older plugins.