Error building libxmljs 0.17.1

[aarranz]

libxmljs 0.17.1 dependency is giving some problems (reported in wirecloud-fiware/ngsi-source-operator#9):

npm ERR! Windows_NT 10.0.14393
npm ERR! argv "C:\Program Files\nodejs\node.exe" "C:\Program Files\nodejs\node_modules\npm\bin\npm-cli.js" "install"
npm ERR! node v6.9.4
npm ERR! npm v3.10.10
npm ERR! code ELIFECYCLE

npm ERR! libxmljs@0.17.1 install: node-gyp rebuild
npm ERR! Exit status 1
npm ERR!
npm ERR! Failed at the libxmljs@0.17.1 install script 'node-gyp rebuild'.
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 libxmljs package,
npm ERR! not with npm itself.
npm ERR! Tell the author that this fails on your system:
npm ERR! node-gyp rebuild
npm ERR! You can get information on how to open an issue for this project with:
npm ERR! npm bugs libxmljs
npm ERR! Or if that isn't available, you can get their info via:
npm ERR! npm owner ls libxmljs
npm ERR! There is likely additional logging output above.

npm ERR! Please include the following file with any support request:
npm ERR! c:\projects\iot\health-iot\FIWARE\ngsi-source-operator\npm-debug.log