[FIX] Adding fix to methylation level simulation by Sabrina Krakau.

Also fixing a left over problem with joining SAM files.


git-svn-id: http://svn.seqan.de/seqan/trunk@14602 e6417c60-b987-48fd-844e-b20f0fcc1017
[FIX] BS-treatment simulation in mason_simulator now uses its own RNG.

mason_simulator should use the same genomic intervals regardless of whether
methylation simulation is enabled.  This patch restores this behaviour.



git-svn-id: http://svn.seqan.de/seqan/trunk@14603 e6417c60-b987-48fd-844e-b20f0fcc1017