Bug#394506: At least since libpango1.0-0 1.14.5-1

[xr at i-jeuxvideo.com]

This was already found in #392344, though I didn't backtrace as Firefox was not
compiled with debug info.
That bug exists since libpango1.0-0 1.14.5-1 at least.

Here's my version info (based on firefox 1.5.dfsg+1.5.0 dependencies, running
Etch)

ii  debianutils    2.17           Miscellaneous utilities specific to Debian
ii  fontconfig     2.4.1-2        generic font configuration library - support
ii  libatk1.0-0    1.12.2-1       The ATK accessibility toolkit
ii  libc6          2.3.6.ds1-4    GNU C Library: Shared libraries
ii  libcairo2      1.2.4-1        The Cairo 2D vector graphics library
ii  libfontconfig1 2.4.1-2        generic font configuration library - runtime
ii  libfreetype6   2.2.1-5        FreeType 2 font engine, shared library files
ii  libgcc1        4.1.1-13       GCC support library
ii  libglib2.0-0   2.12.3-2       The GLib library of C routines
ii  libgtk2.0-0    2.8.20-2       The GTK+ graphical user interface library
ii  libjpeg62      6b-13          The Independent JPEG Group's JPEG runtime li
ii  libpango1.0-0  1.14.5-1       Layout and rendering of internationalized te
ii  libpng12-0     1.2.8rel-5.2   PNG library - runtime
ii  libstdc++6     4.1.1-13       The GNU Standard C++ Library v3
ii  libx11-6       1.0.0-9        X11 client-side library
ii  libxft2        2.1.8.2-8      FreeType-based font drawing library for X
ii  libxinerama1   1.0.1-4.1      X11 Xinerama extension library
ii  libxp6         1.0.0.xsf1-1   X Printing Extension (Xprint) client library
ii  libxt6         1.0.2-2        X11 toolkit intrinsics library
ii  psmisc         22.3-1         Utilities that use the proc filesystem
ii  zlib1g         1.2.3-13       compression library - runtime