commit 3850cbac5c2b813cdcf27be18cea9492b0bc0531
author Razvan Musaloiu-E <razvanm@google.com> Mon Jun 20 14:54:56 2016 -0700
committer Razvan Musaloiu-E. <razvanm@google.com> Tue Jun 21 01:25:26 2016 +0000
tree 627881f813ef7cfaae11a4d7a618d040d3e08359
parent 0013d4b9fd85e67155b3c53b9a1c73e81ff73313

java: Switch to the new init/login scheme

The new scheme works like this:

 - init() function is synchronous, it takes the configuration
   parameters and, if isLoggedIn() is true then it starts Syncbase. It
   expects that the database, userdata syncgroup, etc. to already
   exist.

 - isLoggedIn() function is synchronous and it requires init() to have
   been called.

 - login() function is asynchronous, does the oauth token to blessing
   exchange, it requires init() to have been called, starts the
   Syncbase and creates the expected default state (create the default
   database, userdata syncgroup, etc).

 - database() function is synchronous, requires that isLoggedIn() is
   true and returns a Database object right away.

This change only partially implements the above plan (the login is not
wired yet).

The C API gets two new functions:

  - v23_syncbase_Serve(cErr *C.v23_syncbase_VError)
  - v23_syncbase_IsLoggedIn(cIsLoggedIn *C.v23_syncbase_Bool)

The Java high-level API doesn't have the inner DatabaseCallback and
have instead an inner LoginCallback.

This change also switches the tests for core/ and internal/ to
init/shutdown a single time. These makes the tests much faster.

MultiPart: 1/2
Change-Id: Ib6411ec9c2e7b9fe1f7dd8f22880012425396515