Configure Simplecov correctly (rspec#2457)

* Configure simplecov correctly

Simplecov 0.15.x allows regexps for filtering paths that seems to
break out naively configured relative paths, unsure if we were correct
beforehand but this change fixes the build.

* Removing pending for JRuby 9000, issue fixed upstream

* Update spec suffix for latest JRuby

Author: JonRowe

script/rspec_with_simplecov

@@ -28,9 +28,9 @@ begin
     require 'simplecov'
 
     SimpleCov.start do
-      add_filter "./bundle/"
-      add_filter "./tmp/"
-      add_filter "./spec/"
+      add_filter "bundle/"
+      add_filter "tmp/"
+      add_filter "spec/"
       minimum_coverage(100)
     end
   end

spec/integration/spec_file_load_errors_spec.rb

@@ -8,7 +8,7 @@
   let(:failure_exit_code) { rand(97) + 2 } # 2..99
 
   if RSpec::Support::Ruby.jruby_9000?
-    let(:spec_line_suffix) { ":in `<top>'" }
+    let(:spec_line_suffix) { ":in `<main>'" }
   elsif RSpec::Support::Ruby.jruby?
     let(:spec_line_suffix) { ":in `(root)'" }
   elsif RUBY_VERSION == "1.8.7"

spec/rspec/core/reporter_spec.rb

@@ -284,10 +284,6 @@ module RSpec::Core
 
     describe "#notify_non_example_exception" do
       it "sends a `message` notification that contains the formatted exception details" do
-        if RSpec::Support::Ruby.jruby_9000?
-          pending "RSpec gets `Unable to find matching line from backtrace` on JRuby 9000"
-        end
-
         formatter_out = StringIO.new
         formatter = Formatters::ProgressFormatter.new(formatter_out)
         reporter.register_listener formatter, :message