Changes:
  * Removed JAXB from the workspace. Its location is now defined in customize.mk
  * Updated windows ARCH auto-determination logic
Fixes:
  * Do not search under non-existent registry keys
  * getRunspace(view) method was returning the wrong view for the BaseRegkeyAdapter and BaseFileAdapter
  * Fixed NPE in OVAL engine when extracting item data (for variables) from xsi:nil item entities