A symbolic link to the corresponding images from winclient.
LoginButton: added links to code that we are reusing from OpenCurve.

	     LoginButton.cs: a stub of partial for the UI-independent part of the class.
Removed symbolic links, will use links at project level.

It is easier to maintain and less confusing for XS to use these files
through links inside the project.
Changed default namespace to Facebook.Client.

The namespace is the same for the library accross the different
platforms.
Added images for the iOS login button.
Label with a shadow.

Port of the label code from the Facebook-iOS library.
More links removed.

Will be linked through the project.
Added project links to reused code from winclient.
Added ShadowLabel to the project.
Changed assembly name to FacebookClient
Added localizable strings.
Added an extension to string for translations.

An extension method for string, just to make it simple to ask for a
localized string (stolen from
stackoverflow).
More reused code linked.

Added project links to more classes required by the LoginButton class.
Removed typo and sealed class.

Our class needs not be sealed.
Initial code for the iOS-specific part of LoginButton.

Not finished, but I prefer to commit the advancement so far.