merge revision(s) a2c66f52f402cb58372e271226f3341065561e53:

	Make dependency-free gemspec files

	The default gems have not been installed yet in the build directory,
	bundled gems depending on them can not work.  As those dependencies
	should be usable there even without rubygems, make temporary gemspec
	files without the dependencies, and use them in the build directory.
	---
	 ext/extmk.rb       | 11 +++++++++++
	 tool/gem-unpack.rb |  4 ++++
	 2 files changed, 15 insertions(+)

1 files changed, 4 insertions, 0 deletions

diff --git a/tool/gem-unpack.rb b/tool/gem-unpack.rb
index 16ee89f62d..0ba23ef4d3 100644
--- a/tool/gem-unpack.rb
+++ b/tool/gem-unpack.rb
@@ -18,5 +18,9 @@ def Gem.unpack(file, dir = nil, spec_dir = nil)
   end
   FileUtils.mkdir_p(spec_dir)
   File.binwrite(File.join(spec_dir, "#{spec.name}-#{spec.version}.gemspec"), spec.to_ruby)
+  unless spec.extensions.empty? or spec.dependencies.empty?
+    spec.dependencies.clear
+  end
+  File.binwrite(File.join(spec_dir, ".bundled.#{spec.name}-#{spec.version}.gemspec"), spec.to_ruby)
   puts "Unpacked #{file}"
 end