Fix the class docs for the rst-syntax errors.

- Generate a correkt rst-syntax for the [/code] inline markup.
  (http://www.sphinx-doc.org/en/1.6.5/rest.html#inline-markup)
- Fix xml souce bugs

for the sphinx's rst syntax werrors:

class_area.rst:319: WARNING: Inline literal start-string without end-string.
class_area2d.rst:287: WARNING: Inline literal start-string without end-string.
class_audioserver.rst:287: WARNING: Inline literal start-string without end-string.
class_control.rst:509: WARNING: Inline literal start-string without end-string.
class_image.rst:422: WARNING: Inline literal start-string without end-string.
class_image.rst:434: WARNING: Inline literal start-string without end-string.
class_inputevent.rst:74: WARNING: Inline literal start-string without end-string.
class_inputeventaction.rst:45: WARNING: Inline literal start-string without end-string.
class_inputmap.rst:47: WARNING: Inline literal start-string without end-string.
class_kinematicbody.rst:80: WARNING: Inline interpreted text or phrase reference start-string without end-string.
class_kinematicbody2d.rst:80: WARNING: Inline interpreted text or phrase reference start-string without end-string.
class_line2d.rst:182: WARNING: Inline literal start-string without end-string.
class_thread.rst:51: WARNING: Inline literal start-string without end-string.
class_treeitem.rst:160: WARNING: Inline literal start-string without end-string.

doc/tools/makerst.py

@@ -207,6 +207,7 @@ def rstize_text(text, cclass):
             elif cmd == '/code':
                 tag_text = '``'
                 inside_code = False
+                escape_post = True
             elif inside_code:
                 tag_text = '[' + tag_text + ']'
             elif cmd.find('html') == 0: