I've never been able to install Apache2::Request via CPAN. It won't make; however, I did manage to get it installed by downloading libapreq2. Then, I used the following for ./configure:

./configure --enable-shared --with-gnu-ld --enable-perl-glue --with-pe
+rl=/usr/bin/perl
--with-apache2-apxs=/usr/sbin/apxs --with-httpd=/usr/sbin/httpd
[download]

Then I ran /sbin/ldconfig /usr/lib. To double-check, I ran pmpath on Apache2::Request, and it found it.