Update from version 4.00 to version 4.04.

Upstream changes:

Changes in Devel::NYTProf 4.04 (svn 1332) 9th July 2010
  Profile now reports presence of the slow regex match vars ($& $' $`).
  The (cumulative inclusive) recursion time measured for subs that are involved
    in recursion is now reported as 'recursion: ... sum of overlapping time'.
  Trace log messages are now flushed immediately.
  Reduced risk of crashes in embedded applications that don't handle PL_endav
    carefully, like current versions of mod_perl.

Changes in Devel::NYTProf 4.03 (svn 1316) 19th June 2010
  Fixed another nytprofhtml performance problem for profiles with
    many files/evals. Much faster merging of evals now.

  For subs that recurse, show max depth and time in subroutine table.

Changes in Devel::NYTProf 4.02 (svn 1309) 17th June 2010
  Fixed nytprofhtml performance problem for profiles with
    many files/evals.

  Added progress reporting to nytprofhtml.

Changes in Devel::NYTProf 4.01 (svn 1296) 10th June 2010
  Fixed links from block/sub level report pages to string eval report
    pages.  RT#58284

  Restored ordering of line - block - sub links on index page.

  Clarified that saving the source code of string evals requires perl
    version 5.8.9+, 5.10.1+, 5.12 or later. RT#58283


(seb)