SBSection supports iteration through its subsections, represented as SBSection as well.

SBModule supports an additional SBSection iteration, besides the original SBSymbol iteration.
Add docstrings and implement the two SBSection iteration protocols.

llvm-svn: 140449

lldb/scripts/Python/interface/SBModule.i

@@ -31,7 +31,8 @@ and rich comparion methods which allow the API program to use,
     if thisModule == thatModule:
         print 'This module is the same as that module'
 
-to test module equality."
+to test module equality.  A module also contains object file sections, namely
+SBSection.  SBModule supports section iteration through section_iter()."
 ) SBModule;
 class SBModule
 {