Squashed commit of the following:

commit b2516f6444407702d5fbafe37289931864223611
Author: Zhou Ming <mzhou.ismer@gmail.com>
Date:   Sun Mar 23 21:45:51 2014 +1030

    Added python ngspice raw file reader.

commit 8687e47caef2fb23f7d7e2f838013d350c5f8c7d
Author: Zhou Ming <mzhou.ismer@gmail.com>
Date:   Sun Mar 23 14:26:14 2014 +1030

    Added spice raw file dump.

commit d41cc6af85ac2276477ccc26d651fe728960a457
Author: Zhou Ming <mzhou.ismer@gmail.com>
Date:   Sun Mar 23 14:25:27 2014 +1030

    Fixed GPL declaration.

commit cd81fa71309442618ef6bf920f675993c2d857b9
Author: Zhou Ming <mzhou.ismer@gmail.com>
Date:   Sun Mar 23 13:58:17 2014 +1030

    Added raw output for ngspice.

commit 1ea7c0316f3c6689d3b4a1034afbce419b5b8766
Author: Zhou Ming <mzhou.ismer@gmail.com>
Date:   Sat Mar 22 18:10:37 2014 +1030

    Added gnetlist task and GPL statement.

commit 1ba089b905978bc0a026a54909178a42b90613c4
Author: Zhou Ming <mzhou.ismer@gmail.com>
Date:   Sat Mar 22 01:00:47 2014 +1030

    Added initial cmake support.