The SETI@home result table is about to run out of 32-bit IDs,
so we need to move to 64-bit result IDs.
This will happen to the workunit table at some point too.
I changed the server C++ code to use the "long" type for all DB IDs
(and to use appropriate conversion codes like %lu).
"long" is 64 bit on 64-bit machines.
For uniformity I did this for all tables,
even ones (like app) that will never get big.
I chose NOT to change the DB schema for now.
The new code will work with 32-bit ID fields in the DB.
As projects approach the 32-bit limit on a table they can change
its ID field, and fields that reference this table, to BIGINT.
This is likely to happen only on the result and workunit tables.
I put functions in html/ops/db_update.php
to change the IDs of these tables.
When a project is reset, the client deletes all the files from its dir
that BOINC knows about.
However, there may be other files, created by its apps.
On Android, where space is likely to be scarce,
delete these when the project is reset.
Maybe we should do this on all projects.
But we'd need to not to delete user-created files
like app_config.xml, and anonymous-platform stuff
like app_info.xml and the app files.
David Anderson