clearBinding

added clearBinding function
clearBinding functionality to statement.cpp

clearBinding functionality
Removed weird GCC flags causing problems.
Fix for clang warning about Column's implicit constructor.

>> definition of implicit copy constructor for 'Column' is deprecated because it has a user-declared destructor [-Wdeprecated] <<
Merge pull request #25 from saaqibz/patch-2

clearBinding
Merge pull request #26 from saaqibz/patch-3

clearBinding functionality to statement.cpp
Merge pull request #30 from mc-server/weirdflags

Removed weird GCC flags causing problems.
Merge pull request #29 from mc-server/FixClangWarning

Fix for clang warning about Column's implicit constructor.
Fix cpplint warning for Travis Continuous Integration
Fix cpplint warning for Travis Continuous Integration