Makefile refactoring and introducing the 'test' rule.

* Moved the main source file to the lib directory
* ttysolitaire rather than tty-solitaire

lib/ttysolitaire.c

@@ -0,0 +1,40 @@
+#include <stdlib.h>
+#include <curses.h>
+#include "util.h"
+#include "game.h"
+#include "keyboard.h"
+
+const char *program_name;
+
+int main(int argc, const char *argv[]) {
+  program_name = *argv;
+  int key;
+
+  initialize_curses();
+  greet_player();
+
+  while (key != KEY_SPACEBAR) {
+    switch (key = getch()) {
+    case KEY_SPACEBAR:
+      initialize_game();
+      break;
+    case 'q':
+    case 'Q':
+      end_game();
+      end_curses();
+      exit(0);
+    }
+  }
+
+  while (1) {
+    if ((key = getch()) == 'q' || key == 'Q') {
+      end_game();
+      end_curses();
+      exit(0);
+    } else {
+      handle_keyboard_event(key);
+    }
+  }
+
+  return(0);
+}