Merge pull request minio#1249 from harshavardhana/remove-deadcode

main: Remove all the dead/unused code.

Merge pull request minio#1209 from harshavardhana/err-naming

error: Add proper prefixes for s3Error codes.

Merge pull request minio#1105 from harshavardhana/cleanup-assets

build: Cleanup assets file upon make clean.

First official Minimalist Object Storage release