added a sort of lightweight timing summary report for lengthy operations after performing them
providing cc_exec_dir as an alternative to cc_exec, which allows a parameter for the working directory, and debug output of current working directory in popen
rebasing from a CC_DIR with multiple and multi-level VOB symlinks underneath is now working by subsequent calls to 'cleartool lshistory' and 'cleartool ls'
fixed also checking in symlinked files
version 0.1.1, added HISTORY file