* Changed _kern_spawn_thread() and create_thread(): Instead of individual

arguments they get a single thread_creation_attributes structure now.
* Added stack_address and stack_size to thread_creation_attributes,
  which allow to specify the stack size or the stack to be used for the
  new user thread.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@25389 a95241bf-73f2-0310-859d-f6bbb57e9c96

headers/private/kernel/kernel.h

@@ -37,6 +37,8 @@
 /** Size of the stack given to teams in user space */
 #define USER_MAIN_THREAD_STACK_SIZE	(16 * 1024 * 1024)	// 16 MB
 #define USER_STACK_SIZE				(256 * 1024)		// 256 kB
+#define MIN_USER_STACK_SIZE			(4 * 1024)			// 4 KB
+#define MAX_USER_STACK_SIZE			(16 * 1024 * 1024)	// 16 MB
 #define USER_STACK_GUARD_PAGES		4					// 16 kB
 
 /** Size of the environmental variables space for a process */