Fix typo in Serialization_unittest.cc
fix issue #1677: use mathjax in doxygen for displaying mathematical formulas
Add valgrind suppression file when running ctest memcheck
add strange leaking errors of libxml2 to the suppression file
add randomized unit-tests for IO, increase precision for ASCII writers
fix latex error in doxygen
Merge pull request #1679 from gsomix/feature/protobuf

Unit-tests for IO