started rroxy implementatoin for SwiftRestClient, several bug fixes and HTTP call optimizations in SwiftRestClient
Merge branch 'master' of git://github.com/DmitryMezhensky/Hadoop-and-Swift-integration

Conflicts:
	swift-file-system/src/main/java/org/apache/hadoop/fs/swift/snative/SwiftNativeFileSystemStore.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/TestSwiftFileSystemExtendedContract.java