Modify the interface of Suurballe (#266, #181)

- Move the parameters s and t from the constructor to the run()
function. It makes the interface capable for multiple run(s,t,k)
calls (possible improvement in the future) and it is more similar
to Dijkstra.
- Simliarly init() and findFlow(k) were replaced by init(s) and
findFlow(t,k). The separation of parameters s and t is for the
future plans of supporting multiple targets with one source node.
For more information see #181.
- LEMON_ASSERT for the Length type (check if it is integer).
- Doc improvements.
- Rearrange query functions.
- Extend test file.

INCLUDE_DIRECTORIES(

  ${PROJECT_SOURCE_DIR}

  ${PROJECT_BINARY_DIR}

)

LINK_DIRECTORIES(${PROJECT_BINARY_DIR}/lemon)

ADD_EXECUTABLE(lgf-gen lgf-gen.cc)

TARGET_LINK_LIBRARIES(lgf-gen lemon)

ADD_EXECUTABLE(dimacs-to-lgf dimacs-to-lgf.cc)

TARGET_LINK_LIBRARIES(dimacs-to-lgf lemon)

ADD_EXECUTABLE(dimacs-solver dimacs-solver.cc)

TARGET_LINK_LIBRARIES(dimacs-solver lemon)

INSTALL(

  TARGETS lgf-gen dimacs-to-lgf dimacs-solver

  RUNTIME DESTINATION bin

  COMPONENT bin

)

IF(NOT WIN32)

  INSTALL(

    PROGRAMS ${CMAKE_CURRENT_SOURCE_DIR}/lemon-0.x-to-1.x.sh

    DESTINATION bin

    COMPONENT bin)

ENDIF(NOT WIN32)