base-files: provide more tolerant xterm detection

Set the window title not only in "xterm", but also in
e.g. "xterm-256color", "xterm-color", etc.
The case statement is taken from Debian / Ubuntu.

Signed-off-by: Paul Wassi <p.wassi@gmx.at>

package/base-files/files/etc/profile

@@ -14,7 +14,11 @@ export HOME=$(grep -e "^${USER:-root}:" /etc/passwd | cut -d ":" -f 6)
 export HOME=${HOME:-/root}
 export PS1='\u@\h:\w\$ '
 
-[ "$TERM" = "xterm" ] && export PS1='\[\e]0;\u@\h: \w\a\]'$PS1
+case "$TERM" in
+	xterm*|rxvt*)
+		export PS1='\[\e]0;\u@\h: \w\a\]'$PS1
+		;;
+esac
 
 [ -x /bin/more ] || alias more=less
 [ -x /usr/bin/vim ] && alias vi=vim || alias vim=vi