* Restconf native http/1, first working version

* Renamed files clixon_http -> restconf_http
  * Split main file into restconf_native.c
  * Remove all evhtp code and libevhtp/libevent dependency

configure

@@ -5184,6 +5184,7 @@ $as_echo "checking http1 is enabled: $ac_enable_http1" >&6; }
    if test "$ac_enable_http1" = "yes"; then
       $as_echo "#define HAVE_HTTP1 true" >>confdefs.h
  # Must be tree/false (not 0/1) used in shells
+      HAVE_HTTP1=true
    fi
 
    # Check if nghttp2 is enabled for http/2