Mod_perl 2, apache 2.2, perl handler example

Make sure that mod_perl.pm is being loaded on server start-up! In httpd.conf, have a line like:
```
LoadModule perl_module modules/mod_perl.so
```
The perl that runs with the apache server needs to know where you are putting your stuff, along with any other perl-isms at startup, so we set a perl file that gets sourced by apache/perl when loading. In httpd.conf, add:
```
PerlRequire /path/to/your/perl_startup.pl
```
This file itself, can set several things, but at a minimum adds the module path for your perl modules to be referenced in:
```
use lib qw(/path/to/your/perl_modules);
1;
```
Now set up code for each specific handler! For each mod_perl app you put out there, you need to map a location to the perl module, in httpd.conf, like so:
```
<Location /modperl_rocks>
       SetHandler perl-script
       PerlResponseHandler MyApache2::Rocks
</Location>
```

Next the perl code itself! In the perl lib directory defined above, /path/to/your/perl_modules, create a file MyApache2/Rocks.pmand have it look something like:

package MyApache2::Rocks;

use strict;
use warnings;

use Apache2::RequestRec();
use Apache2::RequestIO();
use Apache2::Const -compile => qw(OK);

sub handler {
    my ($r) = @_;
    $r->content_type('text/html');
    print "mod_perl 2.0.2 on apache 2.2.2 rocks!n";
    return Apache2::Const::OK;
}

1;