IACCPP-60 - remove the need for libxml
IACCPP-60 - remove the need for libxml
IAA-16 For the thread safety reason it's better that AboutServiceImpl
singleton will be created in the eager way rather than in getInstance
method

Added some javadoc comments
IAA-17 Add status check for findAdevertiseName  improve error handling
of stopAboutClient
IACCPP-60 - remove the need for libxml
Adding Sample propertyStore to AboutService - rename propertyType to
proopertyStoreKey
IAA-18 Improve error handler in AboutServiceImpl in receiving
Announcement

Added javadoc comments
IACCPP-68 - Klockwork
IAA-19 The internal class AnnouncementReceiver unnecessarily implements
BusObject interface