msi: Set rec to NULL after calling msiobj_release on it in msi_create_table so that we don't call msiobj_release on it again.

The HOLD keyword just means that the non-persistent data in the table 
should be kept around, not that the table is temporary.

Implement MSI_DatabaseIsTablePersistent.

msi: The HOLD keyword implies a temporary table, whereas database importing should lead to permanent tables, so remove the HOLD keyword.

Load the data on view creation for simplicity instead of view execution.

msi: Remove the hash table for a column when one of its values is modified since it will now be invalid.

Make string table functions that aren't used outside of string.c static.

Store the loaded refcount in the string table.

wined3d: Actually use the calculated mipmap surface sizes in IWineD3DDeviceImpl_CreateVolumeTexture.

SND_PCM_ASYNC was needed to get asynchronous callbacks, but they are
not used any more, so remove the code.