Provide a way to specify Accept-Encoding headers

[ramesh-tr]

My server php does not have gzip inflation capabilities (zlib extension is not enabled). Please provide a way to remove gzip from the Accept-Encoding header. Right now, it's added by default regardless of the header settings.

[rmccue]

Hmm, strange, we detect support for both deflate and compress, but not gzip. I'll look into this one.