Escape double stars when unzipping Connector/C

Author: sodabrew

tasks/vendor_mysql.rake

@@ -49,9 +49,9 @@ task "vendor:mysql", [:platform] do |_t, args|
     when_writing "creating #{t.name}" do
       cd "vendor" do
         sh "unzip", "-uq", full_file,
-           "#{vendor_mysql_dir(args[:platform])}/bin/**",
-           "#{vendor_mysql_dir(args[:platform])}/include/**",
-           "#{vendor_mysql_dir(args[:platform])}/lib/**",
+           "#{vendor_mysql_dir(args[:platform])}/bin/\\*\\*",
+           "#{vendor_mysql_dir(args[:platform])}/include/\\*\\*",
+           "#{vendor_mysql_dir(args[:platform])}/lib/\\*\\*",
            "#{vendor_mysql_dir(args[:platform])}/README" # contains the license info
       end
       # update file timestamp to avoid Rake performing this extraction again.