validator for linux x86-64 platform extracted from the native client project
and adopted. rdtsc instruction moved to "blacklist". unlike other blacklisted
instructions rdtsc being replaced with nops (not halts)

to make validator (release version) run
  make validator

to clean validator run
  make clean

to put validator shared library, standalone validator and stubout utility to
toolchain folder run
  make install

altogether can be done with
  make clean validator install


---------
Packaging
---------

Validator includes artifacts for creating debian packages. Packages can be
generated using the following steps.

1. To create a package from source, you'll first need to install a couple of
   developer utility packages:

    $ sudo apt-get install devscripts debhelper

2. Clone source from git. Example:

    $ git clone https://github.com/zerovm/validator.git $HOME/validator

3. From the working copy, take a snapshot of the HEAD version of repo and save
   it to the parent directory (in this example, $HOME), then gzip it:

    $ cd $HOME/validator
    $ git archive HEAD --output ../libvalidator0_0.9.orig.tar.gz

4. Compile and build the package:

    $ debuild --source-option=--include-binaries

   To skip the prompt for a GPG signature, you can include these options:

    $ debuild -us -uc --source-option=--include-binaries

   This will output the following files in the parent directory ($HOME):

    libvalidator0_0.9-2_amd64.build
    libvalidator0_0.9-2_amd64.changes
    libvalidator0_0.9-2_amd64.deb
    libvalidator0_0.9-2.debian.tar.gz
    libvalidator0_0.9-2.dsc