The package I submitted for review had a patch to compile against the system libbz2 instead of the bundled one. (It looks like I still didn't get it 100% right though... Oops.) The patch should be in the next Compress::Raw::Bzip2 according to http://rt.cpan.org/Public/Bug/Display.html?id=25489
Created attachment 158313 [details] Patch to use system libbz2
And by not "100% right", I mean I didn't actually enable the behavior the patch was meant to enable. I was still building against the bundled libbz2. It *should* be as simple as just setting BZIP2_LIB=%{_libdir}, but it doesn't appear to be quite that easy.
Oh, wait, nevermind. I should have re-read the patch. You also have to set BUILD_BZIP2=0.
Created attachment 158314 [details] Proposed patch to spec - Update to 2.005. - Build against system libbz2 (#246401).
update to 2.005, with your patch. Also updated the other 'Compress' packages to 2.005.