Cleaned print + other minor fixes

- Shamelessly deleted all TODOs and FIXMEs
- blah blah
CLEANUP

- Renamed variables and functions to camel case
Timestamp is corrected, in openrel
Added GLOBAL_VARS_CHANGED,ERRORS_REPORTED, ALGORITHM,IMPL. DETAILS to all functions that I written
Code Cleanup

- Added comments
- Fixed a possible bug in create
Corrected FIFO replacement if relation is already open
Merge branch 'dheeraj' into nithin
Cache replacement bug fix

- No other known bugs currently
Clean up and documentation + Print bug

- Stable version
Adding minirel-doc.pdf
Merge branch 'nithin'

Stable documented version
Merge branch 'master' of https://github.com/nithinvnath/minirel