Check both max open files and max subprocesses when computing number of partitions since popen counts as a subprocess

Update resources for overlap store building and be more conservative in memory usage to avoid issues on systems with no or low swap space

Patch addressing issue #57. For very long reads mask repetitive kmers to avoid over-allocating memory and seeding with them.

Fix parallel store building with > 512 files. Now that sizes are auto-computed a partition -F isn't passed so shouldn't default to 512 but max FS limit

Auto-increase overlap minimum size for bogart, temporary while bogart splitting algorithm is improved