Issue #73: Make test more complex
Fixes #74: Add extra check on expect_error flag
Fixes #75: Propogate simulator failues and raise exceptions on trigger creation
Cleanup: Fixup messages to LOG_xxx to not have a new line since this is added by the python logging routines
Cleanup: Modify raise_error to have more of the stack frame that is of interest
Fixes #78: Implement single call from vpi upto __init__.py
Cleanup: Add messages to clock module for stop and enable restarting of the same clock
Cleanup: Add a testcase for close down of two routines on the same trigger and executing ReadWrite after ReadOnly
Fixes #71: move to using raise_error
Merge branch 'master' of github.com:potentialventures/cocotb
Cleanup: Remove dirs that are no longer present in structure from makefile