[Valgrind-mod] [Linux-kernel-mod] SQLite writing to temporary file fails.

[mfragkoulis]

At the point SQLite reaches its allocated heap space (could happen for GROUP BY or ORDER BY clauses in big queries),it goes on to write its intermediate result to a temporary file; then happens the crash (grep ListToPMA in SQLite source). So the mapping of write related system calls to ones offered by Valgrind requires fixing. Temporary workaround: configured SQLite to work with 4096 byte pages and allocate 10K of them by default (was 1024 and 2K respectively). Did so with two PRAGMA queries.