Add new GZIP DEFLATE decompressor/compressor

[aglab2]

Replaced GZIP DEFLATE decompression algorithm from libdeflate instead of ancient libz implementation. It roughly doubles decompression performance while being smaller.

File sizes:
6869784 sm64_deflate_new.z64
6876360 sm64_deflate_old.z64

[gheskett]

Any reason we're now unconditionally adding gzip to the builds, even when using a non-gzip compression format by default?

[aglab2]

Any reason we're now unconditionally adding gzip to the builds, even when using a non-gzip compression format by default?

I suggest compression code massacre to remove all unrelated stuff. We build lots of tools for other compression algos as well.

[arthurtilly]

@gheskett What is the requested change here

[gheskett]

@gheskett What is the requested change here

The funny debug snippet and merge conflict

[aglab2]

Merge conflicts were fixed, ready for another round of review