Merge remote-tracking branch \'toybox/master\' into HEAD

am: 19ef8b8a7d

* commit '19ef8b8a7d596e032eb5b2449120d6d3d3031f0e':
  Implement "insmod -".
  Add test_COMMAND for each command, update "make help" to describe TEST_HOST and VERBOSE=fail, and fix a quote mismatch.
  Help text update from Isaac Dunham, tweaked slightly.
  Add xxd -p and -r.
  RLIMIT_RTTIME was added to the kernel in 2008, you can't expect uClibc to have noticed yet.
  The perl build's attempt to escape spaces and such in LD_LIBRARY_PATH is _SAD_. It uses a sed expression that assumes you can escape - to use it as a literal (you can't, it has to be first or last char of the range), and assumes you have to escape delimiters in sed [] context (you don't), and/or that non-printf escapes become the literal character (they don't, the backslash is preserved as a literal), meaning it winds up doing "s/[\-\]//" which is a length 1 range, which is officially undefined behavior according to posix, and regcomp errors out.
  Add support for getprop -Z
  Fix remounting /system on Android.
  Testfile with the 3 different types of "not utf8 output" escaped chars in it.
  Add dynamic/static checking to file (printing dynamic linker if found).
  Add the sed invocations to convert tabs/spaces and back, plus some tweaks.
  Cleanup pass on file.c, and add detection of different ELF architectures.
  Add "make list", rename make working->list_working and pending->list_pending, and filter out commands that aren't nofork but aren't installed either (toyflags 0, I.E. recognized aliases like "-sh" called from login).
  Implement file(1).
  Fix wc -c optimization.
  removed unread assignment in sed.c