Confusing exception when reindexing without directory write permissions

[martinsik]

When I try to run massive:search:reindex while I don't have write permissions to the directory where I store indices I get confusing exception not helping me at all.

[ZendSearch\Lucene\Exception\RuntimeException]

[wachterjohannes]

We should catch some exceptions and throw "usefull" exception in the adapters.