bug fix
Merge with Steve version https://github.com/steveloughran/Hadoop-and-Swift-integration . Bug fixes in big file upload api, unit tests added that will be converted into functional/integration tests
minor fix in SwiftRestClient
Merge remote-tracking branch 'dmitry/master' into combined

Conflicts:
	swift-file-system/src/main/java/org/apache/hadoop/fs/swift/http/SwiftRestClient.java
	swift-file-system/src/main/java/org/apache/hadoop/fs/swift/snative/SwiftNativeFileSystemStore.java
	swift-file-system/src/main/java/org/apache/hadoop/fs/swift/snative/SwiftNativeOutputStream.java
	swift-file-system/src/test/java/org/apache/hadoop/fs/swift/InMemorySwiftNativeStore.java
	swift-file-system/src/test/java/org/apache/hadoop/fs/swift/SwiftTestUtils.java
	swift-file-system/src/test/java/org/apache/hadoop/fs/swift/TestSwiftFileSystemBasicOps.java
	swift-file-system/src/test/java/org/apache/hadoop/fs/swift/TestSwiftFileSystemContract.java
	swift-file-system/src/test/java/org/apache/hadoop/fs/swift/TestSwiftFileSystemExtendedContract.java
	swift-file-system/src/test/java/org/apache/hadoop/fs/swift/TestSwiftObjectPath.java