Remove deletion of dot files on cleanup.

This is a potentially very dangerous action that's impossible to test that it's correct.
If the '..' check line ever disappears, even running the tests will start deleting
everything accessible on the person's computer.

All dot-files that are generated are already known by Jekyll as either a static file or
a page (yaml front matter), only remove those files.

lib/jekyll/site.rb

@@ -215,8 +215,8 @@ module Jekyll
     def cleanup
       # all files and directories in destination, including hidden ones
       dest_files = Set.new
-      Dir.glob(File.join(self.dest, "**", "*"), File::FNM_DOTMATCH) do |file|
-        dest_files << file unless file =~ /\/\.{1,2}$/
+      Dir.glob(File.join(self.dest, "**", "*")) do |file|
+        dest_files << file
       end
 
       # files to be written

test/test_site.rb

@@ -171,8 +171,6 @@ class TestSite < Test::Unit::TestCase
         clear_dest
         @site.process
         # generate some orphaned files:
-        # hidden file
-        File.open(dest_dir('.htpasswd'), 'w')
         # single file
         File.open(dest_dir('obsolete.html'), 'w')
         # single file in sub directory
@@ -183,7 +181,6 @@ class TestSite < Test::Unit::TestCase
       end
       
       teardown do
-        FileUtils.rm_f(dest_dir('.htpasswd'))
         FileUtils.rm_f(dest_dir('obsolete.html'))
         FileUtils.rm_rf(dest_dir('qux'))
         FileUtils.rm_f(dest_dir('quux'))
@@ -191,7 +188,6 @@ class TestSite < Test::Unit::TestCase
       
       should 'remove orphaned files in destination' do
         @site.process
-        assert !File.exist?(dest_dir('.htpasswd'))
         assert !File.exist?(dest_dir('obsolete.html'))
         assert !File.exist?(dest_dir('qux'))
         assert !File.exist?(dest_dir('quux'))