Log Message:
Updated archivers/brotli to 1.0.3

Brotli v1.0.3
Key changes:
 - new feature: "Large Window Brotli"
 - new dictionary generator

Other changes:
 - improved compression ratio: sub-blocks stitching
 - improved compression ratio: eliminated floating numbers rounding
 - improved compression ratio: make the zopflification aware
   of NDIRECT, NPOSTFIX
 - improve automake build
 - improve BrotliEncoderMaxCompressedSize precision
 - fix API documentation / typos
 - fix code style
 - make hashers host-endianness-independent
 - Java: added "eager" decoding both to JNI wrapper and pure decoder
 - CLI: window size is auto-adjusted
 - added dictionaryless compressed dictionary