renamed atomic_read() into atomic_get() (since we already have atomic_set(), but not a atomic_write())

renamed user_??? functions into the new _user_??? naming style.
changed implementation of PPC 64 bit atomic functions to use (un)lock_memory()


git-svn-id: file:///srv/svn/repos/haiku/trunk/current@4417 a95241bf-73f2-0310-859d-f6bbb57e9c96

headers/private/kernel/ksyscalls.h

@@ -140,13 +140,13 @@ enum {
 	SYSCALL_ATOMIC_ADD,
 	SYSCALL_ATOMIC_AND,
 	SYSCALL_ATOMIC_OR,				/* 130 */
-	SYSCALL_ATOMIC_READ,
+	SYSCALL_ATOMIC_GET,
 	SYSCALL_ATOMIC_SET64,
 	SYSCALL_ATOMIC_TEST_AND_SET64,
 	SYSCALL_ATOMIC_ADD64,
 	SYSCALL_ATOMIC_AND64,			/* 135 */
 	SYSCALL_ATOMIC_OR64,
-	SYSCALL_ATOMIC_READ64,
+	SYSCALL_ATOMIC_GET64,
 };
 
 int syscall_dispatcher(unsigned long call_num, void *arg_buffer, uint64 *call_ret);