download config files

* common.mk (update-config_files): rule to download config files.
* tool/config.guess, tool/config.sub: remove and download from the
  upstream.
* tool/get-config_files: download config files from GNU.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@41293 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
update config files

* .travis.yml (before_script): update config files.
* common.mk ($(srcdir)/tool/config.{guess,sub}): use get-config_files.
* tool/config_files.rb: split get-config_files.


git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@41294 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
* tool/get-config_files: show downloading message.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@41295 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
* Makefile.in (after-update): non-configure platforms don't need
  config files.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@41296 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
* configure.in: download missing config files.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@41297 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
* NEWS: add a note for Module#using.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@41298 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
* class.c, include/ruby/ruby.h: add write barriers for T_CLASS,
  T_MODULE, T_ICLASS.
* constant.h: constify rb_const_entry_t::value and file to detect
  assignment.
* variable.c, internal.h (rb_st_insert_id_and_value, rb_st_copy):
  added. update table with write barrier.
* method.h: constify some variables to detect assignment.
* object.c (init_copy): add WBs.
* variable.c: ditto.
* vm_method.c (rb_add_method): ditto.



git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@41299 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
* compile.c (rb_iseq_compile_node): fix location of a `trace'
  instruction (b_return event).
  [ruby-core:55305] [ruby-trunk - Bug #8489]
  (need a backport to 2.0.0?)
* test/ruby/test_settracefunc.rb: add a test.



git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@41300 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
* bignum.c (bigdivrem): Use bignew when ny == 1.


git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@41301 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
* bignum.c (bigdivrem): Reduce number of digits before bignew() for div.


git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@41302 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
* bignum.c (bdigs_small_lshift): Extracted from big_lshift.
  (bigdivrem): Use bdigs_small_lshift.


git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@41303 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
* 2013-06-15

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@41304 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
test_method.rb: use realpath

* test/ruby/test_method.rb (TestMethod#test___dir__): $LOAD_PATH
  entries are expanded to real paths.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@41305 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
vm_eval.c: __dir__ in eval

* vm_eval.c (eval_string_with_cref): propagate absolute path from the
  binding if it is given explicitly.  patch by Gat (Dawid Janczak) at
  [ruby-core:55123]. [Bug #8436]

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@41306 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
* bignum.c (bdigs_small_rshift): Extracted from big_rshift.
  (bigdivrem): Use bdigs_small_rshift.



git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@41307 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
* ext/bigdecimal/bigdecimal.gemspec: Update authors


git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@41308 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
* ext/bigdecimal/bigdecimal.c: Update overview formatting of headers


git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@41309 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
* bignum.c (bigmul1_normal): Shrink the result Bignum length.


git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@41310 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
* bignum.c (absint_numwords_bytes): Make it static.
  (absint_numwords_small): Ditto.
  (absint_numwords_generic): Ditto.



git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@41311 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
* bignum.c (bary_unpack): Extracted from rb_integer_unpack_internal.
  (absint_numwords_generic): Use bary_unpack.
  (roomof): Defined.
  (bdigit_roomof): Defined.
  (BARY_ARGS): Defined.
  (bary_unpack): Declared.



git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@41312 b2dd03c8-39d4-4d8f-98ff-823fe69b080e