* Tk::Wm Pod: wrapper() actually returns a two-element list
* minor nit in Font.pod
* converted JPEG/t/more.t to Test::More
* fix for 5.17.7 and newer: SvUPGRADE() is no longer an expression
* config: perlrx.c fails to link with perl 5.17.x, but we're
  interested in compiling only anyway
* fixed another interactive placement issue in test suite
* need to call SvIV_nomg and SvIV_nomg

  Since perl 5.17.2 Tk's internal magic handling was partially broken.
  When running Tk programs warnings like

      TclObj_get 8027e0c30 int 0'

  could happen.

  This was fixed by changing a SvIV and SvNV call in Tcl_ObjMagic() to
  use their _nomg counterparts.

  With this change the Tk test suite _may- run cleanly again (not
  always, and only under simple window managers like twm)
* dirtree.t test: fixed Subwidget call

  It was called without argument, which means return all subwidgets.
  It's probably just coincidence (or the lack of hash randomization?)
  that most of the time the expected widget was the first one.
* objGlue.t test extension: check for cget() return value
* Tcl_GetStringFromObj: simplified utf8 repair code

  The utf8Whoops() function is gone; it doesn't do anything different
  than a sv_utf8_upgrade + sv_dump, something which is already done a
  few lines before.

  Also, as the t/objglue.t test script touches a code path calling
  LangDebug+sv_dump (since perl 5.17.x), the debugging calls are now
  removed to reduce noise in the test suite (it seems that things
  still work anyway).
* removed unused static functions from tkGlue.c
  * all_printable
  * CopyAv
Fix compilation under threaded bleadperl

 Ticket <URL: https://rt.cpan.org/Ticket/Display.html?id=78824 >

CopSTASHPV is no longer an lvalue under threads.  (It never was under non-threaded builds.)