Try to load version file of github repository at first.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@64145 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

lib/e2mmap.gemspec

@@ -1,4 +1,10 @@
-require_relative "e2mmap/version"
+begin
+  require_relative "lib/e2mmap/version"
+rescue LoadError
+  # for Ruby core repository
+  require_relative "e2mmap/version"
+end
+
 
 Gem::Specification.new do |spec|
   spec.name          = "e2mmap"

lib/forwardable/forwardable.gemspec

@@ -1,4 +1,9 @@
-require_relative "../forwardable"
+begin
+  require_relative "lib/forwardable"
+rescue LoadError
+  # for Ruby core repository
+  require_relative "../forwardable"
+end
 
 Gem::Specification.new do |spec|
   spec.name          = "forwardable"

lib/irb/irb.gemspec

@@ -1,4 +1,9 @@
-require_relative "version"
+begin
+  require_relative "lib/irb/version"
+rescue LoadError
+  # for Ruby core repository
+  require_relative "version"
+end
 
 Gem::Specification.new do |spec|
   spec.name          = "irb"

lib/mutex_m.gemspec

@@ -1,4 +1,9 @@
-require_relative "mutex_m"
+begin
+  require_relative "lib/mutex_m"
+rescue LoadError
+  # for Ruby core repository
+  require_relative "mutex_m"
+end
 
 Gem::Specification.new do |spec|
   spec.name          = "mutex_m"

lib/shell/shell.gemspec

@@ -1,4 +1,9 @@
-require_relative "version"
+begin
+  require_relative "lib/shell/version"
+rescue LoadError
+  # for Ruby core repository
+  require_relative "version"
+end
 
 Gem::Specification.new do |spec|
   spec.name          = "shell"

lib/sync.gemspec

@@ -1,4 +1,9 @@
-require_relative "sync"
+begin
+  require_relative "lib/sync"
+rescue LoadError
+  # for Ruby core repository
+  require_relative "sync"
+end
 
 Gem::Specification.new do |spec|
   spec.name          = "sync"

lib/thwait/thwait.gemspec

@@ -1,4 +1,8 @@
-require_relative "version"
+begin
+  require_relative "lib/thwait/version"
+rescue LoadError
+  require_relative "version"
+end
 
 Gem::Specification.new do |spec|
   spec.name          = "thwait"

lib/tracer/tracer.gemspec

@@ -1,4 +1,9 @@
-require_relative "version"
+begin
+  require_relative "lib/tracer/version"
+rescue LoadError
+  # for Ruby core repository
+  require_relative "version"
+end
 
 Gem::Specification.new do |spec|
   spec.name          = "tracer"