The check_global_access() function was made available to InnoDB, but
was not defined in the embedded server library.  InnoDB, as a plugin,
is not recompiled when the embedded server is built.  This caused a
link failure when compiling applications which use the embedded server.

The fix here is to always define check_global_access() externally; in
the embedded server case, it is defined to just return OK.

Also, don't run the test case for this bug in embedded server.


mysql-test/t/innodb_bug34053.test:
  Disable this test on embedded server - it tests privilege
  checks which are not in place there.
sql/mysql_priv.h:
  Since check_global_access() may be used from some storage engine plugins
  (InnoDB, currently), and the plugins are not recompiled for the embedded
  server, it must be defined externally even for NO_EMBEDDED_ACCESS_CHECKS.
sql/sql_parse.cc:
  Since check_global_access() may be used from some storage engine plugins
  (InnoDB, currently), and the plugins are not recompiled for the embedded
  server, it must be defined externally even for NO_EMBEDDED_ACCESS_CHECKS.