fix a bug in convert rotation matrix to quaternion
xemacs has been drafted to perform our indentation services
fix a bug in converting rotation matrix to quaternion
fix compilation problem for g++ 3.4
merging new_design branch into OOPSE-2.0
add getArray function to RectMatrix and Vector classes
Snapshot and SnapshotManager in progress
Math library pass the unit test
except diagonalize(), all of functions in math library pass the test
more tests on math library
fix some bugs in Quaternion class
math library in progress
math library in progress
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