docs: cython sanitized

* Sanitized the shell command examples of extraneous whitespace.
* Removed keycount.c as sanitising it is pointless and it will be
  generated by Cython when the example is followed.
* Regenerated the .texi version.

doc/gpgme-python-howto.texi

@@ -2105,7 +2105,7 @@ real        11m52.945s
 user        0m0.913s
 sys        0m0.752s
 
-bash-4.4$ 
+bash-4.4$
 @end example
 
 Sometime after that I imported another key and followed it with a
@@ -2150,7 +2150,7 @@ Compile it:
 
 @example
 bash-4.4$ python setup.py build_ext --inplace
-bash-4.4$ 
+bash-4.4$
 @end example
 
 Then run it in a similar manner to @samp{keycount.py}:
@@ -2180,6 +2180,9 @@ On the other hand it ran in nearly half the time; taking 6 minutes and
 47.905 seconds to run.  As opposed to the 11 minutes and 52.945 seconds
 which the CPython script alone took.
 
+The @samp{keycount.pyx} and @samp{setup.py} files used to generate this example
+have been added to the @samp{examples/howto/advanced/cython/} directory.
+
 @node Miscellaneous work-arounds
 @chapter Miscellaneous work-arounds
 

lang/python/docs/gpgme-python-howto.org

@@ -2010,7 +2010,7 @@ results:
   user	0m0.913s
   sys	0m0.752s
 
-  bash-4.4$ 
+  bash-4.4$
 #+END_SRC
 
 Sometime after that I imported another key and followed it with a
@@ -2055,7 +2055,7 @@ Compile it:
 
 #+BEGIN_SRC shell
   bash-4.4$ python setup.py build_ext --inplace
-  bash-4.4$ 
+  bash-4.4$
 #+END_SRC
 
 Then run it in a similar manner to =keycount.py=:
@@ -2085,6 +2085,9 @@ On the other hand it ran in nearly half the time; taking 6 minutes and
 47.905 seconds to run.  As opposed to the 11 minutes and 52.945 seconds
 which the CPython script alone took.
 
+The =keycount.pyx= and =setup.py= files used to generate this example
+have been added to the =examples/howto/advanced/cython/= directory.
+
 
 * Miscellaneous work-arounds
   :PROPERTIES: