lighttpd: update to 1.4.50.
- 1.4.50 - 2018-08-13
* [mod_extforward] allow explict IPs to be untrusted (#2860)
* [core] fix crash if 'host' empty in config (fixes #2876)
* [mod_magnet] fix regression in lighty.stat (fixes #2877)
* [core] minor code cleanup in gw_recv_response()
* [core] fix rare race condition from backends (fixes #2878)
* [mod_proxy] fix segfault in Set-Cookie reverse map (fixes #2879)
* [core] fdevent_accept_listenfd() nonblock cloexec
* [build] remove m4 AC_PATH_PROG for PKG_CONFIG
* [core] some header cleanup
* [mod_wstunnel] better Sec-WebSocket-Protocol parse
* [mod_magnet] code reuse
* [mod_magnet] reduce buffer copies
* [mod_fastcgi,mod_scgi] fastcgi.balance,scgi.balance (fixes #2882)
* [core] check if SOCK_NONBLOCK is ignored (fixes #2883)
* [core] buffer_append_string_encoded_hex_lc()
* [core] more efficient hex2int()
* [mod_secdownload] compare bin MAC instead of hex
* [core] li_tohex_lc() explicitly uses lc hex chars
* [core] buffer_append_uint_hex_lc() uses lc hex
* [core] buffer_append_string_encoded() uc hex
* [tests] reduce test_base64 brute force tests
* [tests] remove test_buffer output, except on error
* [core] check for continuation in server.tag
* [core] CONNECT must be handled before fs hooks
* [mod_redirect, mod_rewrite] code reuse (sharing)
* [core] data_config_pcre_compile,exec()
* [tests] test_request unit tests
* [core] http_kv.[ch] method, status, version str
* [core] remove unused get_http_status_body_name()
* [core] remove proc_open.[ch], reduce stdio.h use
* [tests] move src/test_*.c to src/t/
* [core] server.http-parseopts URL normalization opt (fixes #1720)
* [core] inline some buffer.[ch] routines
* [core] remove some duplicative code in log.c
* [core] debug server.log-request-header-on-error
* [mod_redirect,mod_rewrite] short-circuit earlier
* [core] fix buffer_to_upper()
* [mod_cgi] handle CGI partial response header write
* [mod_redirect,mod_rewrite] pass request URI info
* [mod_redirect,mod_rewrite] encoding options (fixes #443, fixes #911)
* [mod_redirect,mod_rewrite] fix segfault w/ invalid syntax (fixes #2892)
* [mod_fastcgi] fix memleak with FastCGI auth,resp (fixes #2894)
* [mod_alias] security: potential path traversal with specific configs
* [mod_wstunnel] quiet 32-bit compiler warnings
* [core] POLLRDHUP handling for transparent proxying
* [mod_redirect,mod_rewrite] support up to 19 match
* [core] add missing includes to quiet compiler warn
* [mod_redirect,mod_rewrite] base64url encoding opt
* [mod_rewrite] require rewrite result to begin '/'
* [core] security: use-after-free invalid Range req
* [core] reset var if FAMMonitorDirectory() fails
* [core] option to propagate TCP FIN to backend host
* mod_sockproxy - socket forwarding
* [core] workaround Coverity cov-build bug with gcc7
* [build] add missing file for test_burl
* [core] quell insignificant coverity warning
* [core] extend server.http-parseopts
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