sandbox-1.3.0

- new wrappers for functions:
	faccessat
	fchmodat
	fchownat
	futimesat
	linkat
	lutimes
	mkdirat
	mkfifoat
	mknodat
	openat64
	openat
	renameat
	symlinkat
	unlinkat
	utime
	utimensat
	utimes

- warn whenever a static ELF is executed (since we can't wrap it)

- internal I/O functions for libsandbox for reliable output

- internal memory functions to avoid crashing with applications that implement
  their own sets

- a lot of source code cleanups