* lib/rubygems: Update to RubyGems master 66e5c39. Notable changes:

Implement gem.deps.rb (Gemfile) .lock support

  Fixed `gem uninstall` for a relative directory in GEM_HOME.

* test/rubygems:  ditto.


git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@43939 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

lib/rubygems/request_set/lockfile.rb

@@ -1,3 +1,8 @@
+##
+# Parses a gem.deps.rb.lock file and constructs a LockSet containing the
+# dependencies found inside.  If the lock file is missing no LockSet is
+# constructed.
+
 class Gem::RequestSet::Lockfile
 
   ##
@@ -100,7 +105,7 @@ class Gem::RequestSet::Lockfile
     out << nil
   end
 
-  def relative_path_from(dest, base)
+  def relative_path_from dest, base # :nodoc:
     dest = File.expand_path(dest)
     base = File.expand_path(base)
 
@@ -263,6 +268,9 @@ class Gem::RequestSet::Lockfile
     get while not @tokens.empty? and peek.first == type
   end
 
+  ##
+  # The contents of the lock file.
+
   def to_s
     @set.resolve
 
@@ -293,6 +301,10 @@ class Gem::RequestSet::Lockfile
     [byte_offset - @line_pos, @line]
   end
 
+  ##
+  # Converts a lock file into an Array of tokens.  If the lock file is missing
+  # an empty Array is returned.
+
   def tokenize # :nodoc:
     @line     = 0
     @line_pos = 0
@@ -342,6 +354,8 @@ class Gem::RequestSet::Lockfile
         end
     end
 
+    @tokens
+  rescue Errno::ENOENT
     @tokens
   end
 
@@ -352,5 +366,14 @@ class Gem::RequestSet::Lockfile
     @tokens.unshift @current_token
   end
 
+  ##
+  # Writes the lock file alongside the gem dependencies file
+
+  def write
+    open "#{@gem_deps_file}.lock", 'w' do |io|
+      io.write to_s
+    end
+  end
+
 end