creating instrumented versions of DT, EP and IS benchmarks

creating instrumented versions of DT, EP and IS benchmarks

details:
- new directories created to avoid the modification of the original .c files
- the binaries created have the same name as the binaries generated by original benchmarks
- instrumentation consists basically in:
   - #include "instr/instr.h"
   - use TRACE_smpi_set_category to declare and set a category to monitor resource utilization
   - execute with -trace parameter
- no instrumentation needed if only a traditional gantt-chart is needed
   - in this case, original versions of benchmarks must be executed with -trace parameter only

git-svn-id: svn+ssh://scm.gforge.inria.fr/svn/simgrid/simgrid/trunk@8196 48e7efb5-ca39-0410-a469-dd3cf9ba447f