PDF files in */downloads/ compressed - removed uncompressed versions

[Gerard Beekmans]

In an effort to save a large amount of bandwidth I've compressed the PDF 
files that haven't been compressed yet and removed the uncompressed 
files in the download sections. This'll conserve some bandwidth and 
associated charges that go along with it.

In the last few days alone the server has uploaded several gigabytes 
worth of LFS and BLFS PDF files.

Gerard