Update Pygments to 1.4.
While here, add PKG_RUN_TEST support.

Version 1.4
-----------
(codename Unsch辰rfe, released Jan 03, 2010)

- Lexers added:

  * Factor (#520)
  * PostScript (#486)
  * Verilog (#491)
  * BlitzMax Basic (#478)
  * Ioke (#465)
  * Java properties, split out of the INI lexer (#445)
  * Scss (#509)
  * Duel/JBST
  * XQuery (#617)
  * Mason (#615)
  * GoodData (#609)
  * SSP (#473)
  * Autohotkey (#417)
  * Google Protocol Buffers
  * Hybris (#506)

- Do not fail in analyse_text methods (#618).

- Performance improvements in the HTML formatter (#523).

- With the ``noclasses`` option in the HTML formatter, some styles
  present in the stylesheet were not added as inline styles.

- Four fixes to the Lua lexer (#480, #481, #482, #497).

- More context-sensitive Gherkin lexer with support for more i18n translations.

- Support new OO keywords in Matlab lexer (#521).

- Small fix in the CoffeeScript lexer (#519).

- A bugfix for backslashes in ocaml strings (#499).

- Fix unicode/raw docstrings in the Python lexer (#489).

- Allow PIL to work without PIL.pth (#502).

- Allow seconds as a unit in CSS (#496).

- Support ``application/javascript`` as a JavaScript mime type (#504).

- Support `Offload <http://offload.codeplay.com>`_ C++ Extensions as
  keywords in the C++ lexer (#484).

- Escape more characters in LaTeX output (#505).

- Update Haml/Sass lexers to version 3 (#509).

- Small PHP lexer string escaping fix (#515).

- Support comments before preprocessor directives, and unsigned/
  long long literals in C/C++ (#613, #616).

- Support line continuations in the INI lexer (#494).

- Fix lexing of Dylan string and char literals (#628).

- Fix class/procedure name highlighting in VB.NET lexer (#624).

(obache)