Make setup.py less chatty by default.

This is a conservative version of SF patch 504889.  It uses the log
module instead of calling print in various places, and it ignores the
verbose argument passed to many functions and set as an attribute on
some objects.  Instead, it uses the verbosity set on the logger via
the command line.

The log module is now preferred over announce() and warn() methods
that exist only for backwards compatibility.

XXX This checkin changes a lot of modules that have no test suite and
aren't exercised by the Python build process.  It will need
substantial testing.

Lib/distutils/cygwinccompiler.py

@@ -50,6 +50,7 @@ from distutils.ccompiler import gen_preprocess_options, gen_lib_options
 from distutils.unixccompiler import UnixCCompiler
 from distutils.file_util import write_file
 from distutils.errors import DistutilsExecError, CompileError, UnknownFileError
+from distutils import log
 
 class CygwinCCompiler (UnixCCompiler):
 
@@ -148,7 +149,7 @@ class CygwinCCompiler (UnixCCompiler):
             src = sources[i] ; obj = objects[i]
             ext = (os.path.splitext (src))[1]
             if skip_sources[src]:
-                self.announce ("skipping %s (%s up-to-date)" % (src, obj))
+                log.debug("skipping %s (%s up-to-date)", src, obj)
             else:
                 self.mkpath (os.path.dirname (obj))
                 if ext == '.rc' or ext == '.res':