Fixed build with base-4.6
Merge pull request #9 from mvv/base-4.6-fix

Fixed build with base-4.6
Fixed catching of SomeException in streamHandler.
removeAllHandler added to allow ghci start/stop cycles. Without it start/stop/start failed because of opened files
fix import
fix export
Fixed build with base-4.6

Conflicts:

	src/System/Log/Handler/Simple.hs
Merge branch 'upstream'