perl 5.8 to 5.18 migration.


httpd.conf  Carton Perlbrew

    1. install perlbrew
     2. install perl5.18 with perlbrew.
     2. b. rename /usr/bin/perl to /usr/bin/perlWithOS
    3. softlink /usr/bin/perl to 5.18 perl bin's perl locaiton

   Install carton
   Create cpanfile with all relevant packages and versions.
    Command:  "carton install --path /var/www/cgi-bin/carton"

 Apache 2.2
    You can SetEnv in apache httpd as:
    SetEnv PERL5LIB /var/www/cgi-bin/carton/lib/perl5