This aligns the autotools build with the cmake build, which doesn't have
a config.h file. It also removes the ambiguity of config.h and
other/bootstrap_daemon/src/config.h.
Did my best to surmise the size requirements of
these integers, will do the rest of the tests soon. Also added a todo
and made an obsessive change to a for loop.
This triggers a code path in Persistent Group Chats that causes a memory
leak. I'm adding this test now, so that we don't merge PGC without fixing
the memory leak first.
