title: rails server fails to start with mysql2 using rvm & ruby 1.9.2-p0 on OSX 10.6.5
body: <p>I'm getting the following error when I start rails server:</p>
  
  <pre><code>$ rails server
  /Users/ssmith/.rvm/gems/ruby-1.9.2-p0/gems/mysql2-0.2.6/lib/mysql2.rb:7:in `require':     dlopen(/Users/ssmith/.rvm/gems/ruby-1.9.2-p0/gems/mysql2-0.2.6/lib/mysql2/mysql2.bundle, 9): Library not loaded: libmysqlclient.16.dylib (LoadError) 
  Referenced from: /Users/ssmith/.rvm/gems/ruby-1.9.2-p0/gems/mysql2- 0.2.6/lib/mysql2/mysql2.bundle
  Reason: image not found - /Users/ssmith/.rvm/gems/ruby-1.9.2-p0/gems/mysql2-    
  0.2.6/lib/mysql2/mysql2.bundle
  </code></pre>
  
  <p>I've installed mysql2 with the following command after the rvm use ruby-1.9.2-p0 command:</p>
  
  <pre><code>$ gem install mysql2 -- --with-mysql-dir=/usr/local/mysql --with-mysql-config=/usr/local/mysql/bin/mysql_config
  Building native extensions.  This could take a while...
  Successfully installed mysql2-0.2.6
  1 gem installed
  Installing ri documentation for mysql2-0.2.6...
  Enclosing class/module 'mMysql2' for class Client not known
  Installing RDoc documentation for mysql2-0.2.6...
  Enclosing class/module 'mMysql2' for class Client not known
  </code></pre>
  
  <p>I have mysql2 in my Gemfile as well as in the database.yml file and bundle install completes fine</p>
  
  <pre><code>$ bundle show mysql2
  /Users/ssmith/.rvm/gems/ruby-1.9.2-p0/gems/mysql2-0.2.6
  </code></pre>
  
  <p>I understand the rails server error is due to it not knowing the mysql_config location on OSX, however on gem install I specified the correct location.  Yet RVM's gem is not respecting that mysql_config location it seems.</p>
  
  <p>Anyone have a solution to this?</p>