Add configuration to coverage

- output dir to coverage/ruby/. (I'll add coverage/objc/)
- set project name.
- add group "Lib".

git-svn-id: https://svn.code.sf.net/p/rubycocoa/svn/trunk/src@2634 f4f36d40-9719-0410-9868-dde021a23eda
Suppress warning from deprecated method NSData.dataWithRubyString

git-svn-id: https://svn.code.sf.net/p/rubycocoa/svn/trunk/src@2635 f4f36d40-9719-0410-9868-dde021a23eda
Delete code for Xcode 2.0 or Project Builder

git-svn-id: https://svn.code.sf.net/p/rubycocoa/svn/trunk/src@2636 f4f36d40-9719-0410-9868-dde021a23eda