Importing NetBSD "Kyua" test framework

To do so, a few dependencies have been imported:

 * external/bsd/lutok
 * external/mit/lua
 * external/public-domain/sqlite
 * external/public-domain/xz

The Kyua framework is the new generation of ATF (Automated Test
Framework), it is composed of:

 * external/bsd/atf
 * external/bsd/kyua-atf-compat
 * external/bsd/kyua-cli
 * external/bsd/kyua-tester
 * tests

Kyua/ATF being written in C++, it depends on libstdc++ which is
provided by GCC. As this is not part of the sources, Kyua is only
compiled when the native GCC utils are installed.

To install Kyua do the following:

 * In a cross-build enviromnent, add the following to the build.sh
   commandline: -V MKBINUTILS=yes -V MKGCCCMDS=yes

WARNING:
  At this point the import is still experimental, and not supported
  on native builds (a.k.a make build).

Change-Id: I26aee23c5bbd2d64adcb7c1beb98fe0d479d7ada

external/mit/lua/dist/README

@@ -0,0 +1,37 @@
+README for Lua 5.1
+
+See INSTALL for installation instructions.
+See HISTORY for a summary of changes since the last released version.
+
+* What is Lua?
+  ------------
+  Lua is a powerful, light-weight programming language designed for extending
+  applications. Lua is also frequently used as a general-purpose, stand-alone
+  language. Lua is free software.
+
+  For complete information, visit Lua's web site at http://www.lua.org/ .
+  For an executive summary, see http://www.lua.org/about.html .
+
+  Lua has been used in many different projects around the world.
+  For a short list, see http://www.lua.org/uses.html .
+
+* Availability
+  ------------
+  Lua is freely available for both academic and commercial purposes.
+  See COPYRIGHT and http://www.lua.org/license.html for details.
+  Lua can be downloaded at http://www.lua.org/download.html .
+
+* Installation
+  ------------
+  Lua is implemented in pure ANSI C, and compiles unmodified in all known
+  platforms that have an ANSI C compiler. In most Unix-like platforms, simply
+  do "make" with a suitable target. See INSTALL for detailed instructions.
+
+* Origin
+  ------
+  Lua is developed at Lua.org, a laboratory of the Department of Computer
+  Science of PUC-Rio (the Pontifical Catholic University of Rio de Janeiro
+  in Brazil).
+  For more information about the authors, see http://www.lua.org/authors.html .
+
+(end of README)