[JRuby-1068] - Implementing Socket.getifaddrs
Fix the JarDirectory resource to return proper sub-files.

This also includes "phantom" jar directory entries, even if a zipfile directory entry does not exist.
Now that regular file globbing handles jar entries well, no need for special parsing logic
[Truffle] Move hash class into its own package.
[Truffle] - Implementing Symbol.all_symbols method.
[Truffle] Call #to_ary on non-arrays arguments that respond to it before destructuring a block argument.
BUILDING.md: Added a new section about incremental compiling and a sentence about cleaning after switching branches.

This information is derived from a comment by mkristian:
https://github.com/jruby/jruby/issues/1470#issuecomment-33900740
[Truffle] Work on block argument semantics.
Merge pull request #1475 from DavidEGrayson/building_pull_request

BUILDING.md: Added info about incremental compiling, cleaning after switching branches

[skip ci]
BUILDING.md: Added a new section about incremental compiling and a sentence about cleaning after switching branches.

This information is derived from a comment by mkristian:
https://github.com/jruby/jruby/issues/1470#issuecomment-33900740

[skip ci]
Merge pull request #1471 from lucasallan/all_symbols

[Truffle] - Implementing Symbol.all_symbols method.
Bugfix for issue #1248

Change LoadService to cope with classpath entries containing spaces.  This
doesn't normally happen when JRuby is invoked from the command-line, but seems
to happen when running via jruby-rack.
Merge pull request #1477 from marktriggs/issue-1248

Bugfix for issue #1248
fix dependency [skip ci]
added IT for https://github.com/jruby/jruby/issues/1477

[skip ci]
fix dependency again [skip ci]
Bugfix for issue #1248

Change LoadService to cope with classpath entries containing spaces.  This
doesn't normally happen when JRuby is invoked from the command-line, but seems
to happen when running via jruby-rack.
added IT for https://github.com/jruby/jruby/issues/1477

[skip ci]
fix dependency [skip ci]
use an bouncy-castle gem which exists on rubygems.org [skip ci]