[Client-API] adding a new method to SearchCursor

[Kiran Ayyagari]

hi guys,

    The SearchCursor which we use to get the search results lacks a
way to return the SearchResultDone message.
    Seelmann pointed this out on IRC today and I have proposed that
will add a new method getSearchDone() to the SearchCursor.

    This method can be called at the end of cursor traversal (after
cursor.next() returns false) to get the SearchResultDone message.

Kiran Ayyagari