close #115, #120
Merge pull request #121 from YaroslavLitvinov/timer-fix

close #115, #120
test for getpwuid & docs updated
set home directory at session start, test updated
log improved, now short filename using in logs
fixed overflow bug, test updated
The rule 'all' must be default, instead of gcov
recursive creation of home directory if not exist
tar fixed: root filesystem archiving now available; another minor fixes
Merge pull request #125 from YaroslavLitvinov/homepath-fix

Homepath fix
readdir test added
Merge pull request #126 from YaroslavLitvinov/readdir-test

readdir test added