Add support for UEFI #130

Job	Run time
build	11m 16s
test (BoxingTests.Kernel)	6m 54s
test (Cosmos.Compiler.Tests.TypeSystem.Kernel)	4m 18s
test (Cosmos.Compiler.Tests.Bcl.Kernel)	9m 38s
test (Cosmos.Compiler.Tests.Bcl.System.Kernel)	9m 0s
test (Cosmos.Compiler.Tests.Exceptions.Kernel)	6m 52s
test (Cosmos.Compiler.Tests.MethodTests.Kernel)	6m 39s
test (Cosmos.Compiler.Tests.SingleEchoTest.Kernel)	3m 11s
test (Cosmos.Kernel.Tests.Fat.Kernel)	18m 1s
test (Cosmos.Kernel.Tests.IO.Kernel)	8m 5s
test (SimpleStructsAndArraysTest.Kernel)	7m 24s
test (Cosmos.Kernel.Tests.DiskManager.Kernel)	7m 3s
test (GraphicTest.Kernel)	8m 51s
test (NetworkTest.Kernel)	3m 25s
test (AudioTests.Kernel)	12m 11s
test (MemoryOperationsTest.Kernel)	7m 40s
test (ProcessorTests.Kernel)	6m 59s
	2h 17m 27s

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