File System changes #368

Job	Run time
build	1m 33s
test (BoxingTests.Kernel)	1m 46s
test (Cosmos.Compiler.Tests.TypeSystem.Kernel)	2m 23s
test (Cosmos.Compiler.Tests.Bcl.Kernel)	3m 4s
test (Cosmos.Compiler.Tests.Bcl.System.Kernel)	3m 45s
test (Cosmos.Compiler.Tests.Exceptions.Kernel)	1m 49s
test (Cosmos.Compiler.Tests.MethodTests.Kernel)	1m 46s
test (Cosmos.Compiler.Tests.SingleEchoTest.Kernel)	1m 51s
test (Cosmos.Kernel.Tests.Fat.Kernel)	3m 11s
test (Cosmos.Kernel.Tests.IO.Kernel)	1m 50s
test (SimpleStructsAndArraysTest.Kernel)	1m 47s
test (Cosmos.Kernel.Tests.DiskManager.Kernel)	1m 49s
test (GraphicTest.Kernel)	4m 1s
test (NetworkTest.Kernel)	55s
test (AudioTests.Kernel)	4m 12s
test (MemoryOperationsTest.Kernel)	2m 4s
test (ProcessorTests.Kernel)	1m 42s
	39m 28s

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