Python API documentation generation tool Code

- Removed debug printfs

- Fixed bug where latex writer would crash if vardoc.value was
UNKNOWN.

- Added "--exclude" option, which does "--exclude-parse" and
"--exclude-introspect" at the same time. It may be mixed freely
with the other two exclude options.
- Allow "--exclude"-type options to be repeated. E.g.,
"--exclude foo --exclude bar" is equivalent to "--exclude foo|bar"
- Fixed bug 1658378 by changing args to ps2pdf to use "#" instead of
"=".

- Removed regexp colorizer (it's been replaced by epydoc.markup.pyval_repr)

- Removed unused import

- Fixed bug caused by previous checkin

- added "rm profile.out" to "make clean"

- Changed ValueDoc.pyval_repr and summary_pval_repr to return
ParsedDocstring's instead of string. These ParsedDocstrings are
generated by epydoc.markup.pyval_repr. Instead of returning a
separate value to indicate whether there's left-over (for
GenericValueDoc.is_detailed), add an 'is_complete' attribute to
the parsed docstring.
- Defer importing of dotgraph from epydoc.markup.epytext to avoid
a circular dependency.

- All tests pass again.

- The parse representation is preferred if repr() returns a stock result,
i.e. something like '<ClassName instance at 0x12345678>'.
- Using LaTeX package fancyhdr instead of the deprecated fancyheadings.
- Added missing escaping of LaTeX parameter default.
- Dropped parse_repr/pyval_repr check in HTML parameters default.