…ruby#1967)

… ...

since we're now not raising users should get ~ the value they expect (closing jruby#1967)

* jruby-1_7: (38 commits)
  basic BigDecimal sub-class test ... all working the same as MRI 1.8/1.9
  avoid deprecated newInstance + one less pattern to match on BigDecimal.new
  [bigdecimal] keep the simplified newInstance backport 1.8 compatible
  [bigdecimal] backport simplified newInstance impl from master
  minor BigDecimal code cleanup
  handle big decimal ** float value calculation (with Java double math) ... since we're now not raising users should get ~ the value they expect (closing #1967)
  static-ize and simplify private helpers
  BigDecimal should not raise error on pow/** with float arg (under 1.9 #1967)
  some more (internal) RubyBigDecimal dry-ing / tidy-ing
  do coercion on * and / (same as MRI has been doing since 1.8) ... fixes #2538
  handle BigDecimal cmp failure compatibly with MRI (fixes #2539)
  pass around context in BigDecimal impl + simplify cmp method's code
  move JI java.mat.BigDecimal test out of Ruby's BigDecimal tests
  [travis-ci] test-extended on jdk8
  if current directory is inside the classloader a spawn jruby process should do the same
  use the new bin stubs from new rubygems
  set ENV['RUBY'] when jruby.home is not regular directory
  Add support for http.nonProxyHosts and rework ENV_JAVA support.
  pik the right class in URLResourceTest
  use new JRuby.create to load script from command line script source
  ...

Conflicts:
	.travis.yml
	core/src/main/java/org/jruby/RubyDir.java
	core/src/main/java/org/jruby/RubyEnumerable.java
	core/src/main/java/org/jruby/RubyEnumerator.java
	core/src/main/java/org/jruby/RubyHash.java
	core/src/main/java/org/jruby/RubyInstanceConfig.java
	core/src/main/java/org/jruby/RubyModule.java
	core/src/main/java/org/jruby/ext/bigdecimal/RubyBigDecimal.java
	core/src/main/java/org/jruby/util/ClasspathResource.java
	core/src/main/java/org/jruby/util/URLResource.java
	core/src/test/java/org/jruby/util/URLResourceTest.java
	lib/ruby/2.0/net/http.rb
	lib/ruby/2.0/uri/generic.rb
	maven/jruby/src/it/runnable/spec/one_spec.rb
	test/test_backquote.rb
	test/test_big_decimal.rb
	test/test_dir.rb
	test/test_file.rb
	test/test_higher_javasupport.rb
	test/test_load.rb