eliminate trailing spaces and normalize initial spacing of examples (some had...

eliminate trailing spaces and normalize initial spacing of examples (some had five spaces, and the usual is four).

src/zc/buildout/buildout.txt

@@ -710,10 +710,10 @@ characters, hyphens, and periods.
 Annotated sections
 ------------------
 
-When used with the `annotate` command, buildout displays annotated sections. 
+When used with the `annotate` command, buildout displays annotated sections.
 All sections are displayed, sorted alphabetically. For each section,
-all key-value pairs are displayed, sorted alphabetically, along with 
-the origin of the value (file name or COMPUTED_VALUE, DEFAULT_VALUE, 
+all key-value pairs are displayed, sorted alphabetically, along with
+the origin of the value (file name or COMPUTED_VALUE, DEFAULT_VALUE,
 COMMAND_LINE_VALUE).
 
     >>> print system(buildout+ ' annotate'), # doctest: +ELLIPSIS
@@ -736,7 +736,7 @@ COMMAND_LINE_VALUE).
         DEFAULT_VALUE
     installed= .installed.cfg
         DEFAULT_VALUE
-    log-format= 
+    log-format=
         DEFAULT_VALUE
     log-level= INFO
         DEFAULT_VALUE
@@ -1169,7 +1169,7 @@ operations.
         /sample-buildout/base.cfg
     +=  /sample-buildout/extension1.cfg
     +=  /sample-buildout/extension2.cfg
-    recipe= 
+    recipe=
         /sample-buildout/base.cfg
     <BLANKLINE>
     [part2]
@@ -1177,7 +1177,7 @@ operations.
         /sample-buildout/base.cfg
     -=  /sample-buildout/extension1.cfg
     -=  /sample-buildout/extension2.cfg
-    recipe= 
+    recipe=
         /sample-buildout/base.cfg
     <BLANKLINE>
     [part3]
@@ -1185,7 +1185,7 @@ operations.
     c3 c4 c5
         /sample-buildout/base.cfg
     +=  /sample-buildout/extension1.cfg
-    recipe= 
+    recipe=
         /sample-buildout/base.cfg
     <BLANKLINE>
     [part4]
@@ -1907,7 +1907,7 @@ the buildout in the usual way:
     parts = debug d1 d2 d3
     <BLANKLINE>
     [debug]
-    __buildout_installed__ = 
+    __buildout_installed__ =
     __buildout_signature__ = recipes-PiIFiO8ny5yNZ1S3JfT0xg==
     recipe = recipes:debug
     <BLANKLINE>
@@ -1992,7 +1992,7 @@ The .installed.cfg is only updated for the recipes that ran:
     parts = debug d1 d2 d3 d4
     <BLANKLINE>
     [debug]
-    __buildout_installed__ = 
+    __buildout_installed__ =
     __buildout_signature__ = recipes-PiIFiO8ny5yNZ1S3JfT0xg==
     recipe = recipes:debug
     <BLANKLINE>
@@ -2189,7 +2189,7 @@ database is shown.
     ... parts =
     ... """)
 
-    >>> print system(buildout+' -vv'),
+    >>> print system(buildout+' -vv'), # doctest: +NORMALIZE_WHITESPACE
     Installing 'zc.buildout', 'setuptools'.
     We have a develop egg: zc.buildout 1.0.0.
     We have the best distribution that satisfies 'setuptools'.
@@ -2203,11 +2203,11 @@ database is shown.
     eggs-directory = /sample-buildout/eggs
     executable = /usr/local/bin/python2.3
     installed = /sample-buildout/.installed.cfg
-    log-format = 
+    log-format =
     log-level = INFO
     newest = true
     offline = false
-    parts = 
+    parts =
     parts-directory = /sample-buildout/parts
     python = buildout
     verbosity = 20
@@ -2323,20 +2323,20 @@ If we have an existing buildout that already has a buildout.cfg, we'll
 normally use the bootstrap command instead of init.  It will complain
 if there isn't a configuration file:
 
-     >>> sample_bootstrapped2 = tmpdir('sample-bootstrapped2')
+    >>> sample_bootstrapped2 = tmpdir('sample-bootstrapped2')
 
-     >>> print system(buildout
-     ...              +' -c'+os.path.join(sample_bootstrapped2, 'setup.cfg')
-     ...              +' bootstrap'),
-     While:
-       Initializing.
-     Error: Couldn't open /sample-bootstrapped2/setup.cfg
+    >>> print system(buildout
+    ...              +' -c'+os.path.join(sample_bootstrapped2, 'setup.cfg')
+    ...              +' bootstrap'),
+    While:
+      Initializing.
+    Error: Couldn't open /sample-bootstrapped2/setup.cfg
 
-     >>> write(sample_bootstrapped2, 'setup.cfg',
-     ... """
-     ... [buildout]
-     ... parts =
-     ... """)
+    >>> write(sample_bootstrapped2, 'setup.cfg',
+    ... """
+    ... [buildout]
+    ... parts =
+    ... """)
 
     >>> print system(buildout
     ...              +' -c'+os.path.join(sample_bootstrapped2, 'setup.cfg')