Move all include files to src/include

- 86Box's own headers go to /86box
- munt's public interface goes to /mt32emu
- all slirp headers go to /slirp (might want to consider using only its public inteface)
- single file headers from other projects go in include root

src/include/86box/plat_dir.h

@@ -0,0 +1,76 @@
+/*
+ * 86Box	A hypervisor and IBM PC system emulator that specializes in
+ *		running old operating systems and software designed for IBM
+ *		PC systems and compatibles from 1981 through fairly recent
+ *		system designs based on the PCI bus.
+ *
+ *		This file is part of the 86Box distribution.
+ *
+ *		Definitions for the platform OpenDir module.
+ *
+ *
+ *
+ * Author:	Fred N. van Kempen, <decwiz@yahoo.com>
+ *		Copyright 2017 Fred N. van Kempen.
+ */
+#ifndef PLAT_DIR_H
+# define PLAT_DIR_H
+
+
+#ifdef _MAX_FNAME
+# define MAXNAMLEN	_MAX_FNAME
+#else
+# define MAXNAMLEN	15
+#endif
+# define MAXDIRLEN	127
+
+
+struct direct {
+    long		d_ino;
+    unsigned short 	d_reclen;
+    unsigned short	d_off;
+#ifdef UNICODE
+    wchar_t		d_name[MAXNAMLEN + 1];
+#else
+    char		d_name[MAXNAMLEN + 1];
+#endif
+};
+#define	d_namlen	d_reclen
+
+
+typedef struct {
+    short	flags;			/* internal flags		*/
+    short	offset;			/* offset of entry into dir	*/
+    long	handle;			/* open handle to Win32 system	*/
+    short	sts;			/* last known status code	*/
+    char	*dta;			/* internal work data		*/
+#ifdef UNICODE
+    wchar_t	dir[MAXDIRLEN+1];	/* open dir			*/
+#else
+    char	dir[MAXDIRLEN+1];	/* open dir			*/
+#endif
+    struct direct dent;			/* actual directory entry	*/
+} DIR;
+
+
+/* Directory routine flags. */
+#define DIR_F_LOWER	0x0001		/* force to lowercase		*/
+#define DIR_F_SANE	0x0002		/* force this to sane path	*/
+#define DIR_F_ISROOT	0x0010		/* this is the root directory	*/
+
+
+/* Function prototypes. */
+#ifdef UNICODE
+extern DIR		*opendirw(const wchar_t *);
+#else
+extern DIR		*opendir(const char *);
+#endif
+extern struct direct	*readdir(DIR *);
+extern long		telldir(DIR *);
+extern void		seekdir(DIR *, long);
+extern int		closedir(DIR *);
+
+#define rewinddir(dirp)	seekdir(dirp, 0L)
+
+
+#endif	/*PLAT_DIR_H*/