Fix sogo_folder_get_deleted_fmids() to return 0 as a globcnt (leads to crashes in OC layer)

The important commit (among bogus ones) is this 3edb5fc4bd542571e9848c8c2dce67bfb4d6f8fc
With this commit, SOGo layer is able to correctly remove records for deleted messages
and store "SyncLastDeleteChangeNumber" for parent folder.

it wasn't working in first place due to the fact, that SOGo wasn't able to update its cache
because it was trying in to search in cached Dictionary with a key of type NSNumber while
dictionary keys are of type NSString.
So it boils down to comparisons like [NSString isEqual:NSNumber] -> always FALSE (NO)
It is totally intended
This script gets called for every obj-C file we compile and when you (I mean me) set your samba log level to 5,
it totally bloats compile log.

And here is the original comment:
With this patch, we are going to reset 'log level' to 0 every time you compile SOGo backend - so no more bad logs, no more worries - it is like "all-win" strategy in action :)