This status variable indicates that an innodb buffer pool load never
completed and dumping at shutdown would result in an incomplete dump file.

This status variable is set to 1 once a buffer pool loads. Upon a successful
load this status variable returns to 0.

With this status variable set, the system variable
innodb_buffer_pool_dump_at_shutdown==1 will have no effect as dumping after
an incomplete load will generate a less complete dump file than the current
one.

If a user aborts a buffer pool load by changing the system variable
innodb_buffer_pool_load_abort=1 will cause the the status variable
innodb_buffer_pool_load_incomplete to remain set to 1.

A shutdown that occurs while innodb is loading the buffer pool will
not save the buffer pool on shutdown.

A user may indirectly set innodb_buffer_pool_load_incomplete
to 0 by:
* Forcing a load, by setting innodb_buffer_pool_load_now=ON, or
* Forcing a dump, by setting innodb_buffer_pool_dump_now=ON

This will enable the next dump on shutdown to complete.
Signed-off-by: Daniel Black <daniel.black@au.ibm.com>