[Pkg-javascript-devel] nodejs-12 transition

[Xavier]

There are no 2 packages to fix at least. I did my best with partial
patches but I need help to fix them:
 * node-srs: new upstream version not compatible with current libgdal,
             need help to fix current version
 * node-nodedbi: I'm unable to fix one issue (Nan::Value to std::string)

Other packages looks good or were previously broken (some of them in
experimental)