added carbon to docs.

doc/src/tutorial/compile_mac_coreaudio.dox

@@ -99,6 +99,7 @@ You will need to add the following frameworks to your XCode project:
  - AudioToolbox.framework
  - AudioUnit.framework
  - CoreServices.framework
+ - Carbon.framework
 
 @section comp_mac_ca_5 Using the Library in Other Projects
 
@@ -118,4 +119,4 @@ Note, there used to be a special makefile just for darwin. This is no longer sup
 
 Back to the Tutorial: \ref tutorial_start
 
-*/
+*/