Launch Server command requires xterm

When an internal server is launched from the TEG GUI, it is launched in an xterm, and will not launch if the xterm package is not installed.

Either teg should Recommend / Suggest xterm, or client/misc.c should be modified to use x-terminal-emulator rather than xterm when launching an local server.

As xterm is not in the default install, the following diff should probably be applied.

--- misc.c.orig 2006-02-25 19:49:00.000000000 +0900
+++ misc.c 2006-02-25 19:49:54.000000000 +0900
@@ -200,7 +200,7 @@

                char buffer[100];
                close_descriptors();
- args[0] = "xterm";
+ args[0] = "x-terminal-emulator";
                args[1] = "-e";
                args[2] = BINDIR"/tegserver";
                args[3] = "--port";