Merged with a number of fixes to the test patch. Thanks!
The CFLAGS have to be propagated to the probes target, and I added a target
to ensure the EXTRA_DIST files are copied to the build directory.
Also, the "comparison" test did not work on 32-bit x86 since "long" and
"int" have the same size
This patch set allows for multiple probes with the same name to be
hooked on the same callsite. Right now, the Session Daemon only
considers the name and signature of the events to determine if two
events are identical. This could lead to trace corruptions when two
probes would have the same name
