doc: tweak doxygen a bit

Author: Duncaen

doc/xbps_api_doxyfile.in

@@ -313,7 +313,7 @@ SUBGROUPING            = YES
 # @ingroup) instead of on a separate page (for HTML and Man pages) or
 # section (for LaTeX and RTF).
 
-INLINE_GROUPED_CLASSES = NO
+INLINE_GROUPED_CLASSES = YES
 
 # When the INLINE_SIMPLE_STRUCTS tag is set to YES, structs, classes, and
 # unions with only public data fields will be shown inline in the documentation
@@ -464,14 +464,14 @@ INLINE_INFO            = YES
 # alphabetically by member name. If set to NO the members will appear in
 # declaration order.
 
-SORT_MEMBER_DOCS       = YES
+SORT_MEMBER_DOCS       = NO
 
 # If the SORT_BRIEF_DOCS tag is set to YES then doxygen will sort the
 # brief documentation of file, namespace and class members alphabetically
 # by member name. If set to NO (the default) the members will appear in
 # declaration order.
 
-SORT_BRIEF_DOCS        = YES
+SORT_BRIEF_DOCS        = NO
 
 # If the SORT_MEMBERS_CTORS_1ST tag is set to YES then doxygen
 # will sort the (brief and detailed) documentation of class members so that