ncdu: update to 1.11

- Add patch to get WEXITSTATUS and WIFEXITED defined
    The issue is fixed in upstream's development repo, so the patch won't be
    needed with ncdu's next release.
- Depend on more commonly used libncurses instead of libncursesw
- Enable parallel build
- Update copyright

Signed-off-by: Charles Lehner <cel@celehner.com>

utils/ncdu/patches/010-add_sys_wait.patch

@@ -0,0 +1,10 @@
+--- a/src/shell.c
++++ b/src/shell.c
+@@ -33,6 +33,7 @@
+ #include <stdlib.h>
+ #include <unistd.h>
++#include <sys/wait.h>
+ 
+ void shell_draw() {
+   char *full_path;
+   int res;