Create unique prefix for the sample variable names to avoid assertion
when creating multiple VirtualMemories.
Merge pull request #13 from pjaaskel/master

Fix to VirtualMemory for a test case with multiple memories (a disjoint 2-LSU address space TTA)
Merge git://github.com/svp-dev/mgsim
Allocator: add a missing deadlock check.
Allocator: name the two ready thread lists according to their usage.
Enable selecting the random seed for capabilities.
Fix a syntax bug triggered when C++ threads do not support sigmask.
Improve the random seed selection.