add initial support for viewing variants in the sdk config tree. refactor some code which initializes sbsv2 contexts.
some hacks added for re-loading configurations when the default config is a variant.
<?xml version="1.0" encoding="UTF-8"?>
<?eclipse version="3.2"?>
<plugin>
<extension
id="com.nokia.carbide.cpp.qt.core.symbianSDKMgrHook"
name="Symbian SDK Manager Hook"
point="com.nokia.carbide.cpp.sdk.core.sdkManagerLoadedHook">
<provider
class="com.nokia.carbide.cpp.internal.qt.core.QtCorePlugin"
name="com.nokia.carbide.cpp.internal.qt.core.SDK-HookClient"/>
</extension>
</plugin>