title: "ERROR: Failed to build gem native extension" when installing Cucumber 0.93
body: <p>When I try to install cucumber 0.93 this error is triggered.
  I need to install this specific version.</p>
  
  <pre><code>trabajo@fernando-Inspiron-1545:~/cucumber-rspec$ gem install cucumber -v 0.9.3
  Building native extensions.  This could take a while...
  ERROR:  Error installing cucumber:
      ERROR: Failed to build gem native extension.
  
      /home/trabajo/.rvm/rubies/ruby-1.8.7-p334/bin/ruby extconf.rb
  checking for main() in -lc... yes
  creating Makefile
  
  make
  gcc -I. -I. -I/home/trabajo/.rvm/rubies/ruby-1.8.7-p334/lib/ruby/1.8/i686-linux -I. -D_FILE_OFFSET_BITS=64  -fPIC -g -O2  -fPIC  -O0 -Wall -Werror  -c gherkin_lexer_ar.c
  /Users/aslakhellesoy/scm/gherkin/tasks/../ragel/i18n/ar.c.rl: En la función ‘CLexer_scan’:
  /Users/aslakhellesoy/scm/gherkin/tasks/../ragel/i18n/ar.c.rl:199:29: error: la comparación siempre se evalúa como ‘true’ para la dirección de ‘raise_lexer_error’ que nunca será NULL [-Werror=address]
  /Users/aslakhellesoy/scm/gherkin/tasks/../ragel/i18n/ar.c.rl:199:29: error: la comparación siempre se evalúa como ‘true’ para la dirección de ‘raise_lexer_error’ que nunca será NULL [-Werror=address]
  cc1: all warnings being treated as errors
  make: *** [gherkin_lexer_ar.o] Error 1
  </code></pre>