rough support for current running process
reorder function definitions
add support to inject builtin service
set running process for service's delete function
exported API changed:
 * weenet_process_self() to retrieve current running process
 * weenet_process_pid(p) to get process's pid
Merge branch 'develop' into running_process

Conflicts:
	src/process.c
rewrite process monitor/demonitor to enforce restriction
only called by current running process
Merge branch 'library_inject' into develop
Merge branch 'running_process' into develop
add 'const' qualifier to weenet_library_inject's interface parameter