WELD-1930 Weld SE - basic support for nested archives

[mkouba]

This pull request brings some basic support for various "JarClassLoader solutions" which allow to get resources from nested archives. Note that the CL must always return a supported URL (i.e. file: or jar:file: with absolute path). E.g. One-JAR returns relative URLs by default and so one-jar.jar.path system property must be used to get it working.

[weld-tester]

Triggering build using a merge of fa64e21 on branch master:
Private: https://jenkins.mw.lab.eng.bos.redhat.com/hudson/job/Weld-2.x-pull-player-executor-osprey/

[weld-tester]

Build 881 is now running using a merge of fa64e21 on branch master:
Private: https://jenkins.mw.lab.eng.bos.redhat.com/hudson/job/Weld-2.x-pull-player-executor-osprey/881

[weld-tester]

Build 881 outcome was SUCCESS using a merge of fa64e21 on branch master:
Private: https://jenkins.mw.lab.eng.bos.redhat.com/hudson/job/Weld-2.x-pull-player-executor-osprey/881
Public: https://hudson.jboss.org/hudson/job/Weld-2.x-pull-player-executor-osprey/881

[weld-tester]

Build 881 outcome was SUCCESS using a merge of fa64e21 on branch master:
Private: https://jenkins.mw.lab.eng.bos.redhat.com/hudson/job/Weld-2.x-pull-player-executor-osprey/881
Public: https://hudson.jboss.org/hudson/job/Weld-2.x-pull-player-executor-osprey/881

[weld-tester]

Triggering build using a merge of fa64e21 on branch master:
Private: https://jenkins.mw.lab.eng.bos.redhat.com/hudson/job/Weld-2.x-pull-player-executor-osprey/

[jharting]

I am going to put this PR on hold until there is an automated test for this fearure (as agreed previously).

[mkouba]

Merged without automated test (so far we haven't found a solution). Tested manually with One-JAR.