Maglev changes for maglev-database-explorer.
Evaluate Smalltalk code.
Added new primitive, moved some primitives to db explorer.
Fixed #311.
RubyHash Smalltalk method name consistency.
Change object security policy for AbstractDictionary and AbstractException.
Merge branch 'master-1.9' of github.com:MagLev/maglev into matthias/database-explorer

Conflicts:
	src/test/vmunit.conf
Merge branch 'master-1.9' into matthias/database-explorer
Merge branch 'master' into matthias/database-explorer

* master:
  Install kernel extensions when prims are loaded
  Add uuid and urlsafe_base64 to SecureRandom
  Remove debug output
  Update download host to seaside.gemtalksystems.com
  Change object security policy for AbstractDictionary, AbstractException.
  Fixed Object#public_send spec failure.
  untag two Symbol#=~ specs
  untag specs for public_send
  add IO.pipe based on FFI
  Added missing . for Object#public_send.
  add rubyio.h so compiling puma C extension works
  Implemented Object#public_send for Rails 4.0.
  Implemented Symbol#=~ for Ruby 1.9.
  Copied mutex_m.rb from MRI.
Merge pull request #329 from MagLev/matthias/database-explorer

Database Explorer