Housekeeping changes and small bug-fixes:

Added new syscall for set_thread_priority().
Replaced the userland syscall snooze_until() with snooze_etc() (the latter
has to be exported to userland and realize snooze() and snooze_until()).
Cleaned the sources - scheduler functions now have the scheduler_ prefix.
Moved signal related stuff into ksignal.h (out of thread.h).
Replaced public kernel API with direct exports (i.e. resume_thread() instead
of thread_resume_thread()).
Removed the thread_create_XXX_thread*() calls, and replaced them with a
BeOS compatible set.
Made some fields of struct thread a bit prettier.


git-svn-id: file:///srv/svn/repos/haiku/trunk/current@2569 a95241bf-73f2-0310-859d-f6bbb57e9c96

headers/private/kernel/syscalls.h

@@ -25,7 +25,7 @@ int     sys_getrlimit(int resource, struct rlimit * rlp);
 int     sys_setrlimit(int resource, const struct rlimit * rlp);
 
 bigtime_t sys_system_time();
-status_t  sys_snooze_until(bigtime_t time, int timebase);
+status_t  sys_snooze_etc(bigtime_t time, int timebase, int32 flags);
 
 /* sem functions */
 sem_id sys_create_sem(int count, const char *name);