[RELEASE] Released version 2.0.3

Released version 2.0.3 with the following main changes :
    - BUG/MINOR: dns: remove irrelevant dependency on a client connection
    - BUG/MEDIUM: checks: Don't attempt to receive data if we already subscribed.
    - BUG/MEDIUM: http/htx: unbreak option http_proxy
    - BUG/MINOR: backend: do not try to install a mux when the connection failed
    - BUG/MINOR: http_fetch: Fix http_auth/http_auth_group when called from TCP rules
    - BUG/MINOR: http_htx: Initialize HTX error messages for TCP proxies
    - BUG/MINOR: cache/htx: Make maxage calculation HTX aware
    - BUG/MINOR: hlua: Make the function txn:done() HTX aware
    - DOC: htx: Update comments in HTX files
    - BUG/MINOR: debug: Remove flags CO_FL_SOCK_WR_ENA/CO_FL_SOCK_RD_ENA
    - BUG/MINOR: session: Emit an HTTP error if accept fails only for H1 connection
    - BUG/MINOR: session: Send a default HTTP error if accept fails for a H1 socket
    - BUG/MINOR: checks: do not exit tcp-checks from the middle of the loop
    - BUG/MEDIUM: mux-h1: Trim excess server data at the end of a transaction
    - BUG/MINOR: mux-h1: Close server connection if input data remains in h1_detach()
    - BUG/MEDIUM: tcp-checks: do not dereference inexisting conn_stream
    - BUG/MINOR: http_ana: Be sure to have an allocated buffer to generate an error
    - BUG/MINOR: http_htx: Support empty errorfiles
    - BUG/CRITICAL: http_ana: Fix parsing of malformed cookies which start by a delimiter
4 files changed