[Core] Fix TargetFramework race

If something tries to request an unknown TargetFramework during
TargetRuntime initialization, ensure all the runtimes are initialized
and try again.
[Ide] Fix execution target list unexpectedly changing.

HandleConfigurationChanged could added at an unexpected time, resulting
in the target runtime being changed unexpectedly in response to
execution targets changing. This was observed whenever
IPhoneDeviceManager handled a device change.
Updated reference to md-addins
Updated reference to xwt
Merge pull request #489 from LogosBible/ExecutionTargetReset

[Ide] Fix execution target list unexpectedly changing.
Fixed 'Bug 18061 - Incorrect "delegate subtraction has unpredictable result" warning'
Bump nrefactory.
Bump nrefactory.
[CSharpBinding] Added in text for some keywords.

Added in the form and summary markup for the missing keywords.
[CSharpBinding] Added tooltip for dynamic.
[CSharpBinding] Removed unneeded lines.

Had //done on certain cases to mark progress. Removed.
Merge pull request #492 from TheCommieDuck/master

[CSharpBinding] Added tooltip form and summary text for missing keywords.
Correction of spelling mistakes
Adding French translations
Merge pull request #493 from dorinf/master

Spelling mistakes and French translation
Try work around for 'Bug 16519 - Pasting into source editor breaks
after a while'.
Fixed 'Bug 18110 - "Splash Screen" gets in the way when errors occur
on startup'.
Workaround for crash reported in bug #18096
Fixed 'Bug 18111 - Fix -> Create member on other file with open search
menu fails '.
[Win32] Fix Subversion uncaught exception.