block settings revert is too theme-specific for some fields

The visibility, pages, custom and title fields of the blocks table are updated by the regular block configuration screen without respect to theme. The fe_block module's settings revert function only updates the record for the exported theme. This leaves those fields empty for other themes in the blocks table. The result can be that the same records and the same feature code can seem to respect the exported settings in one installation, and ignore them in another, depending on the default order of the records in the blocks table (it just uses the first record without any explicit ordering).

I copied the update statement from the block admin page and it seems to work OK. Probably, though, the exported data needs to be changed to distinguish theme-specific block settings from these global block settings.