Create SFFS library out of HGFS

This Shared Folders File System library (libsffs) now contains all the
file system logic originally in HGFS. The actual HGFS server code is
now a stub that passes on all the work to libsffs. The libhgfs library
is changed accordingly.

lib/libsffs/table.c

@@ -0,0 +1,47 @@
+/* This file contains the file system call table.
+ *
+ * Created:
+ *   April 2009 (D.C. van Moolenbroek)
+ */
+
+#define _TABLE
+#include "inc.h"
+
+int (*call_vec[])(void) = {
+	no_sys,		/*  0			*/
+	no_sys,		/*  1 getnode		*/
+	do_putnode,	/*  2 putnode		*/
+	no_sys,		/*  3 slink		*/
+	do_ftrunc,	/*  4 ftrunc		*/
+	no_sys,		/*  5 chown		*/
+	do_chmod,	/*  6 chmod		*/
+	do_noop,	/*  7 inhibread		*/
+	do_stat,	/*  8 stat		*/
+	do_utime,	/*  9 utime		*/
+	do_fstatfs,	/* 10 fstatfs		*/
+	no_sys,		/* 11 bread		*/
+	no_sys,		/* 12 bwrite		*/
+	do_unlink,	/* 13 unlink		*/
+	do_rmdir,	/* 14 rmdir		*/
+	do_unmount,	/* 15 unmount		*/
+	do_noop,	/* 16 sync		*/
+	do_noop,	/* 17 new_driver	*/
+	do_noop,	/* 18 flush		*/
+	do_read,	/* 19 read		*/
+	do_write,	/* 20 write		*/
+	no_sys,		/* 21 mknod		*/
+	do_mkdir,	/* 22 mkdir		*/
+	do_create,	/* 23 create		*/
+	no_sys,		/* 24 link		*/
+	do_rename,	/* 25 rename		*/
+	do_lookup,	/* 26 lookup		*/
+	no_sys,		/* 27 mountpoint	*/
+	do_readsuper,	/* 28 readsuper		*/
+	no_sys,		/* 29 newnode		*/
+	no_sys,		/* 30 rdlink		*/
+	do_getdents,	/* 31 getdents		*/
+	do_statvfs,	/* 32 statvfs		*/
+};
+
+/* This should not fail with "array size is negative": */
+extern int dummy[sizeof(call_vec) == NREQS * sizeof(call_vec[0]) ? 1 : -1];