BUG: Fix a minor bug in BCD

I fixed a minor bug in BCD when the "forceHoughEyeDetectorReportFailure"
flag in on.
Also, I made BCD handle the exceptions and print them properly on
screen.
Minor Changes in Exception Handling Mechanism

I used std::cerr for print out the exception message.
Merge pull request #161 from aghayoor/lastVersionOfGit

BUG: Fix a minor bug in BCD when the "forceHoughEyeDetectorReportFailure" flag in on