32-bit build crashes during work with long sequences

Generate a test sequence having a size of 10^9 bases using the Sequence Generator. The following behavior is observed when the sequence is used:

1. UGENE crashes on "GC content" graph rendering.
2. UGENE throws an exception that remains unhandled when the Tandem Search is run with minimum tandem size set to 20, the Repeat Search with default settings, the Sitecon Search with default settings and any model from those distributed along with UGENE, weight matrix search, DAS search, Secondary Structure Prediction and all kinds of BLAST search. Corresponding workers should also be checked.