Cleaned up Python bindings to restore functionality:
* StaticPersistence is iterable, its nodes are usable (sign, pair, cycle)
* StaticPersistence knows how to map its nodes into Filtration indices
* moved PythonCmp into utils.h
* minor cosmetic changes
find_package (Qt4 REQUIRED)
set (QT_USE_QTOPENGL TRUE)
set (QT_USE_QTXML TRUE)
include (${QT_USE_FILE})
#find_library (gle_LIBRARY NAMES gle)
#find_library (QGLViewer_LIBRARY NAMES QGLViewer)
#find_path (QGLViewer_INCLUDE_DIR QGLViewer/qglviewer.h)
#include_directories (${QGLViewer_INCLUDE_DIR})
add_executable (extract-diagram extract-diagram.cpp)
target_link_libraries (extract-diagram ${libraries} ${Boost_SERIALIZATION_LIBRARY})
add_subdirectory (diagram-viewer)
add_subdirectory (matching)