I noticed that some files in rubygems were executable, and I could think
of no reason why they should be.

In general, I think ruby files should never have the executable bit set
unless they include a shebang, so I run the following command over the
whole repo:

```bash
find . -name '*.rb' -type f -executable -exec bash -c 'grep -L "^#!" $1 || chmod -x $1' _ {} \;
```

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@66922 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

This includes performance improvement especially writing. Writing is
about 2 times faster.


git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@66507 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@64638 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@63364 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

  [Bug #11126][ruby-core:69088]

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@59643 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

* object.c, numeric.c, enum.c, ext/-test-/bignum/mul.c,
  lib/rexml/quickpath.rb, lib/rexml/text.rb, lib/rexml/xpath_parser.rb,
  lib/rubygems/specification.rb, lib/uri/generic.rb,
  bootstraptest/test_eval.rb, basictest/test.rb,
  test/-ext-/bignum/test_big2str.rb, test/-ext-/bignum/test_div.rb,
  test/-ext-/bignum/test_mul.rb, test/-ext-/bignum/test_str2big.rb,
  test/csv/test_data_converters.rb, test/date/test_date.rb,
  test/json/test_json_generate.rb, test/minitest/test_minitest_mock.rb,
  test/openssl/test_cipher.rb, test/rexml/test_jaxen.rb,
  test/ruby/test_array.rb, test/ruby/test_basicinstructions.rb,
  test/ruby/test_bignum.rb, test/ruby/test_case.rb,
  test/ruby/test_class.rb, test/ruby/test_complex.rb,
  test/ruby/test_enum.rb, test/ruby/test_eval.rb,
  test/ruby/test_iseq.rb, test/ruby/test_literal.rb,
  test/ruby/test_math.rb, test/ruby/test_module.rb,
  test/ruby/test_numeric.rb, test/ruby/test_range.rb,
  test/ruby/test_rational.rb, test/ruby/test_refinement.rb,
  test/ruby/test_rubyvm.rb, test/ruby/test_struct.rb,
  test/ruby/test_variable.rb, test/rubygems/test_gem_specification.rb,
  test/thread/test_queue.rb: Use Integer instead of Fixnum and Bignum.



git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@55029 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

When you change this to true, you may need to add more tests.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@53141 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@45223 b2dd03c8-39d4-4d8f-98ff-823fe69b080e