pass LoadError original message when ruby-oci8 is installed.
pass LoadError original message when ruby-oci8 is installed.

jgebal/ruby-plsql,JDominator/ruby-plsql,flash-gordon/ruby-plsql,yahonda/ruby-plsql,JDominator/ruby-plsql,rsim/ruby-plsql,yahonda/ruby-plsql,jgebal/ruby-plsql,jgebal/ruby-plsql,rsim/ruby-plsql