Add server side ncurses terminal

This adds a chat console the server owner can use for administration
or to talk with players.
It runs in its own thread, which makes the user interface immune to
the server's lag, behaving just like a client, except timeout.
As it uses the same console code as the f10 console, things like nick
completion or a scroll buffer basically come for free.
The terminal itself is written in a general way so that adding a
client version later on is just about implementing an interface.

Fatal errors are printed after the console exists and the ncurses
terminal buffer gets cleaned up with endwin(), so that the error still
remains visible.

The server owner can chose their username their entered text will
have in chat and where players can send PMs to.
Once the username is secured with a password to prevent anybody to
take over the server, the owner can execute admin tasks over the
console.

This change includes a contribution by @kahrl who has improved ncurses
library detection.

1 files changed, 7 insertions, 0 deletions

diff --git a/src/cmake_config.h.in b/src/cmake_config.h.in
index bda7a891a..018532d13 100644
--- a/src/cmake_config.h.in
+++ b/src/cmake_config.h.in
@@ -19,12 +19,19 @@
 #cmakedefine01 USE_CURL
 #cmakedefine01 USE_SOUND
 #cmakedefine01 USE_FREETYPE
+#cmakedefine01 USE_CURSES
 #cmakedefine01 USE_LEVELDB
 #cmakedefine01 USE_LUAJIT
 #cmakedefine01 USE_SPATIAL
 #cmakedefine01 USE_SYSTEM_GMP
 #cmakedefine01 USE_REDIS
 #cmakedefine01 HAVE_ENDIAN_H
+#cmakedefine01 CURSES_HAVE_CURSES_H
+#cmakedefine01 CURSES_HAVE_NCURSES_H
+#cmakedefine01 CURSES_HAVE_NCURSES_NCURSES_H
+#cmakedefine01 CURSES_HAVE_NCURSES_CURSES_H
+#cmakedefine01 CURSES_HAVE_NCURSESW_NCURSES_H
+#cmakedefine01 CURSES_HAVE_NCURSESW_CURSES_H
 
 #endif