Revised docstring so 'sources' isn't necessarily all C/C++ files (to

accomodate SWIG interface files, resource files, etc.).

extension.py

@@ -31,9 +31,11 @@ class Extension:
  the full name of the extension, including any packages -- ie.
  *not* a filename or pathname, but Python dotted name
  sources : [string]
- list of C/C++ source filenames, relative to the distribution
- root (where the setup script lives), in Unix form
- (slash-separated) for portability
+ list of source filenames, relative to the distribution root
+ (where the setup script lives), in Unix form (slash-separated)
+ for portability. Source files may be C, C++, SWIG (.i),
+ platform-specific resource files, or whatever else is recognized
+ by the "build_ext" command as source for a Python extension.
  include_dirs : [string]
  list of directories to search for C/C++ header files (in Unix
  form for portability)