Docs: Generate Doxygen output for static functions

Author: tpoole

docs/doxygen/Doxyfile

@@ -569,7 +569,7 @@ EXTRACT_PACKAGE        = NO
 # included in the documentation.
 # The default value is: NO.
 
-EXTRACT_STATIC         = NO
+EXTRACT_STATIC         = YES
 
 # If the EXTRACT_LOCAL_CLASSES tag is set to YES, classes (and structs) defined
 # locally in source files will be included in the documentation. If set to NO,

modules/juce_core/system/juce_StandardHeader.h

@@ -161,7 +161,8 @@ JUCE_END_IGNORE_WARNINGS_MSVC
 
 //==============================================================================
 #ifndef JUCE_API
- #define JUCE_API   /**< This macro is added to all JUCE public class declarations. */
+ /** This macro is added to all JUCE public class declarations. */
+ #define JUCE_API
 #endif
 
 #if JUCE_MSVC && JUCE_DLL_BUILD