Enable gcrypt to fix NodeOS/NodeOS#304

[luii]

This would fix the error but i was unable to start NodeOS... after i typed npm start it just does nothing
The compile process goes without critical errors with that, i tried that in luii/NodeOS#gcrypt

[piranna]

It's failling on OSX on the CI server...

$ npm run build

> [email protected] build /Users/travis/build/NodeOS/qemu

> scripts/build

  % Total    % Received % Xferd  Average Speed   Time    Time     Time  Current

                                 Dload  Upload   Total   Spent    Left  Speed

100 24.5M  100 24.5M    0     0   507k      0  0:00:49  0:00:49 --:--:--  337k

ERROR: User requested feature gcrypt

       configure was not able to find it.

       Install gcrypt devel

npm ERR! Darwin 15.5.0

npm ERR! argv "/Users/travis/.nvm/versions/node/v6.2.2/bin/node" "/Users/travis/.nvm/versions/node/v6.2.2/bin/npm" "run" "build"

npm ERR! node v6.2.2

npm ERR! npm  v3.9.5

npm ERR! code ELIFECYCLE

npm ERR! [email protected] build: `scripts/build`

npm ERR! Exit status 6

npm ERR! 

npm ERR! Failed at the [email protected] build script 'scripts/build'.

npm ERR! Make sure you have the latest version of node.js and npm installed.

npm ERR! If you do, this is most likely a problem with the qemu package,

npm ERR! not with npm itself.

npm ERR! Tell the author that this fails on your system:

npm ERR!     scripts/build

npm ERR! You can get information on how to open an issue for this project with:

npm ERR!     npm bugs qemu

npm ERR! Or if that isn't available, you can get their info via:

npm ERR!     npm owner ls qemu

npm ERR! There is likely additional logging output above.

npm ERR! Please include the following file with any support request:

npm ERR!     /Users/travis/build/NodeOS/qemu/npm-debug.log