Temporary remove assertion (DATA2 LogEntryType same address checking).

Temporary remove the DATA2 LogEntryType same address checking between record time and replay time.
DATA2 EntryType is for logging pointer type system call parameter.
When record-replaying `/usr/bin/date` program, we found some difference in address with uname syscall's first parameter(pointer type).
We are not sure if it is the bug of RR, or just the normal condition which doesn't affect RR result.
Add RR functionality testing code in `rr_testcode` directory.

add 3 testing code, std_input, file_IO, localtime_test(part of date command).
readme: add RR functionality testing in valgrindrr_porting branch.