ext: replaced hardcoded values with enum
ext: comment out unused funcions
ext: eblob: remove empty initializer
ext: removed unused functions
ext: more compact dnet_ext_list_hdr structure
ext: eblob: fixed list initializaion
ext: eblob: switch to *_timestamp versions
ext: simplified code a little
ext: added flags to extract/combine
ext: endian stuff
ext: explicit compare with DNET_EXT_FREE_ON_DESTROY
ext: eblob: do not always free read_data