Merge Apollo Link common + HTTP functionality into core

CHANGELOG.md

@@ -25,6 +25,9 @@
 - Eliminate "generated" cache IDs to avoid normalizing objects with no meaningful ID, significantly reducing cache memory usage. <br/>
   [@benjamn](https://github.com/benjamn) in [#5146](https://github.com/apollographql/apollo-client/pull/5146)
 
+- Apollo Link core and HTTP related functionality has been merged into `@apollo/client`. Functionality that was previously available through the `apollo-link`, `apollo-link-http-common` and `apollo-link-http` packages is now directly available from `@apollo/client` (e.g. `import { HttpLink } from '@apollo/client'`). The `ApolloClient` constructor has also been updated to accept new `uri`, `headers` and `credentials` options. If `uri` is specified, Apollo Client will take care of creating the necessary `HttpLink` behind the scenes. <br/>
+  [@hwillson](https://github.com/hwillson) in [#5412](https://github.com/apollographql/apollo-client/pull/5412)
+
 ### Breaking Changes
 
 - Removed `graphql-anywhere` since it's no longer used by Apollo Client.  <br/>

config/rollup.config.js

@@ -8,17 +8,19 @@ import packageJson from '../package.json';
 const distDir = './dist';
 
 const globals = {
-  'apollo-link': 'apolloLink.core',
   'tslib': 'tslib',
   'ts-invariant': 'invariant',
   'symbol-observable': '$$observable',
   'graphql/language/printer': 'print',
   optimism: 'optimism',
   'graphql/language/visitor': 'visitor',
+  'graphql/language/printer': 'printer',
+  'graphql/execution/execute': 'execute',
   'fast-json-stable-stringify': 'stringify',
   '@wry/equality': 'wryEquality',
   graphql: 'graphql',
-  react: 'React'
+  react: 'React',
+  'zen-observable': 'Observable'
 };
 
 const hasOwn = Object.prototype.hasOwnProperty;