Properly convert COM error codes to C# exceptions

Also use additional information provided by IErrorInfo to fill in
exception details.

To make use of IErrorInfo on Linux a suitable implementation has to be
provided, e.g. by including libcom plus adding a mapping from
oleauth32.dll to the shared library that provides the implementation.

This completes mono bug 496138
(https://bugzilla.novell.com/show_bug.cgi?id=496138)
Set ErrorInfo in Marshal.GetHRForException

Marshal.GetHRForException had a MonoTODO because it needs to set
the errorinfo object so that exceptions get properly passed to
unmanaged code. Since not all managed exceptions have a corresponding
HR value but we might need to get to the original thrown exception
we implement a ManagedErrorInfo helper class that implements the
IErrorInfo interface but also stores the exception.

In GetExceptionForHR we check if the errorinfo we get is a
ManagedErrorInfo. If it is we return the exception stored in there
(if it converts to the same error code), otherwise we construct a new
exception.
[MWF] Partially implement Help.ShowHelp
ClientWebSocket: SendAsync endOfMessage inverted.

endOfMessage should indicate whether or not additional message parts will follow the current one. Currently, the meaning in ClientWebSocket.cs is inverted: !endOfMessage indicates that no more parts will follow the current one.

See the WebSockets RFC, 'frame-fin' at the top of http://tools.ietf.org/html/rfc6455#page-31.
Also see the MSDN docs for SendAsync: http://msdn.microsoft.com/en-us/library/system.net.websockets.websocket.sendasync(v=vs.110).aspx
Test ClientWebSocket.SendAsync EndOfMessage
KeyPairPresistence now tries to fix folder permissions.
An exception is no longer thrown if the folder permissions can be fixed.
Fixes bug 19274.
Fix scrolling in SWF.ListView.EnsureVisible(int index)

This fixes https://bugzilla.xamarin.com/show_bug.cgi?id=22483
[runtime] Remove the interpreter.
Added test ISO8601FractionalDigits.
Covers #22417.
DateTime.Parse now handles unlimited number of fractional digits.
This change was made because .NET can parse ISO8601 format with an unlimited number of fractional digits.
Fixes #22417.
[mcs] recursive pattern with named arguments
Cleanup namespace names of class lib tests to follow convention

A couple of the test suites didn't follow the MonoTests.<namespace of class under test> naming convention for the namespace.
[runtime] Get rid of the Makefile.am.in->Makefile.am change in metadata/, its not needed.
Fix the build.
[aot] Allow the redirection of output messages from the AOT compiler to a logfile.
[aot] Print error messages to the aot logfile as well, avoid exiting the process on failures.
[aot] Emit aot logging information to a per-assembly file when using the AOT cache. Cache aot failures.
Test that wrong ISO8601 dates throw FormatException.
[WCF]: Actually fix #22179 to allow concurrent requests.

Pass the 'OperationContext' around in a parameter instead of storing it
in an instance field to make this thread-safe.
[runtime] Fix the linux build.