Port preflow push max flow alg. from svn -r3516 (#176)
Namely,
- port the files
- apply the migrate script
- apply the unify script
- break the long lines in lemon/preflow.h
- convert the .dim test file to .lgf
- fix compilation problems
1 INCLUDE_DIRECTORIES(${CMAKE_SOURCE_DIR})
3 LINK_DIRECTORIES(${CMAKE_BINARY_DIR}/lemon)
10 FOREACH(DEMO_NAME ${DEMOS})
11 ADD_EXECUTABLE(${DEMO_NAME} ${DEMO_NAME}.cc)
12 TARGET_LINK_LIBRARIES(${DEMO_NAME} lemon)