* IOHelper.cs:
* Umbraco.Core.csproj:
* UriHelper.cs:
* XmlHelper.cs:
* PlatformHelper.cs:
* WebFormsHelper.cs:
* ReflectionHelper.cs: add primary multiplatform helper code

* DatabaseContext.cs: update case checking note for mysql databases

* MySqlSyntaxProvider.cs: disable case checking for mysql & unix

* default.aspx:
* Umbraco.Web.UI.csproj:
* skinning.ascx:
* database.ascx:
* noNodes.aspx:
* lt7.css:
* loadStarterKits.ascx:
* database.ascx:
* skinning.ascx:
* loadStarterKitDesigns.ascx:
* DefaultUser.cs:
* loadStarterKitDesigns.ascx.designer.cs:
* FilePermissions.cs: casing changes

* library.cs:
* p.aspx.cs: patch XPathNodeIterator Current in mono