move common files to root

posix.h

@@ -0,0 +1,23 @@
+/* define POSIX stuff: dirent, scandir, getcwd, mkdir */
+#if defined(__linux__) || defined(__MINGW32__)
+
+#include <dirent.h>
+#include <unistd.h>
+#include <sys/stat.h>
+#include <sys/types.h>
+
+#ifdef __MINGW32__
+#warning hacks!
+#define mkdir(pathname,mode) mkdir(pathname)
+#define d_type d_ino
+#define DT_REG 0
+#define DT_DIR 0
+#endif
+
+#else
+
+#error "must provide posix"
+
+#endif
+
+