Import syntax matters

[TylerLeonhardt]

From my testing, the import syntax used had to be in the form:

import * as nls from 'vscode-nls';

and the following wasn't picked up:

import { loadMessageBundle } from 'vscode-nls';

[dbaeumer]

That is correct and for simplicity. Major reason is that we would need to have fully correct code to make sure that we have all symbol bindings in the TS compiler to make the right decisions. Someone could for example write

import { loadMessageBundle  as myFunctionName } from 'vscode-nls';

We also don't support things like

const myFunctionName = loadMessageBundle;

for the same reason.