Log Message:
Changes 8.4.14:
  * Tk_PhotoPutBlock performance restored (JPEG image loading).
  * [namespace inscope] change reverted; harmed Itcl.
  * Made [expr {srand(.)}] accept wide integer argument.
  * Made [lappend $invalidList] raise an error.
  * Improved [text] delete performance.
  * Support for the WM_UNICHAR window message on Windows
  * Stopped excess variable writes by [scale].
  * Tcl_Main no longer blocks main loop start for one interactive command.
  * [console] made thread safe.
  * Thread-enabled configuration uses MT-safe system calls.
  * Many Aqua/Tk bug fixes and improvements, see changes file.
  * Made unthreaded notifier naked-fork-safe on Darwin.
  * Support for weak linking on Mac OS X.
  * msgcat support for CFLocale on Darwin (msgcat 1.3.4)
  * Fixed crashes due to alignment issues in encoding translation routines.
  * Fixed crash with [listbox -listvariable] on namespace variable.
  * Fixed crash when Tcl_DeleteTrace changes proc on the active stack.
  * Fixed crash when normalizing filesystem pathnames.
  * Fixed crash due to invalid font name from XServer.
  * Several 64-bit bugs fixed and platform support enhanced.