Clean up MSG_host_get_storage_content
More substitutions for the smpirun script.
Avoid to put empty components in LD_LIBRARY_PATH.
Whitespace cleanup.
Cosmetics around spacing.
Use keyword "extern" on windows too, and hope to fix build warnings.

Concerned warnings are, for example:
./src/include/smpi/smpi_interface.h:29:43: warning: array mpi_coll_gather_description assumed to have one element [enabled by default]
./src/include/smpi/smpi_interface.h:37:43: warning: array mpi_coll_allgather_description assumed to have one element [enabled by default]
./src/include/smpi/smpi_interface.h:45:43: warning: array mpi_coll_allgatherv_description assumed to have one element [enabled by default]
./src/include/smpi/smpi_interface.h:54:43: warning: array mpi_coll_allreduce_description assumed to have one element [enabled by default]
./src/include/smpi/smpi_interface.h:63:43: warning: array mpi_coll_alltoall_description assumed to have one element [enabled by default]
./src/include/smpi/smpi_interface.h:71:43: warning: array mpi_coll_alltoallv_description assumed to have one element [enabled by default]
./src/include/smpi/smpi_interface.h:80:43: warning: array mpi_coll_bcast_description assumed to have one element [enabled by default]
./src/include/smpi/smpi_interface.h:89:43: warning: array mpi_coll_reduce_description assumed to have one element [enabled by default]
./src/include/smpi/smpi_interface.h:97:43: warning: array mpi_coll_reduce_scatter_description assumed to have one element [enabled by default]
./src/include/smpi/smpi_interface.h:105:43: warning: array mpi_coll_scatter_description assumed to have one element [enabled by default]
./src/include/smpi/smpi_interface.h:114:43: warning: array mpi_coll_barrier_description assumed to have one element [enabled by default]
Initialize arrays at declaration, and remove use of deprecated bzero().
Merge branch 'master' of git+ssh://scm.gforge.inria.fr//gitroot/simgrid/simgrid
model-checker : parallel system state comparison for safety MC
model-checker : fix removal of a visited pair in liveness MC
model-checker : fix memory leak
sometimes, on windows, cmake answers weirdly to this and rawcontexts aren't built
Fix default context factory.
Improve help message about available context factories.
Further improve help message.
Remove "default" factory.  The real default is chosen in sg_config.c.
Centralize declaration for _sg_init_status (renamed to _sg_cfg_init_status).
Guard against jedule being null.
Try to exit in a more valgrind friendly manner when help is requested.
Fix the storage content update after a write action + remove useless loop