Header file modifications

*Add additional log operation (delete)
*create write moved to seperate log file for ease of implementation

Signed-off-by: Vidhoon Viswanathan <vidhoon@cs.utexas.edu>
Server extension

Basic anti entropy complete

*tentative log processing
*stable log processing
*commit notification implementation
*primary can be indicated using run time option

=> create writes moved to seperate file

tested with 2 groups (1server,1client each)

pending:
DB update based on anti entropy
retirement

Signed-off-by: Vidhoon Viswanathan <vidhoon@cs.utexas.edu>