getting source line numbers from printed exit backtrace

[Madhu]

When emacs (compiled with -g3 -O2) crashes, it prints out stuff
```
Backtrace:
/14/build/emacs/build-gtk/src/emacs[0x574a3b]
/14/build/emacs/build-gtk/src/emacs[0x426475]
/14/build/emacs/build-gtk/src/emacs[0x426967]
/14/build/emacs/build-gtk/src/emacs[0x572fa8]
/14/build/emacs/build-gtk/src/emacs[0x573019]
/lib64/libc.so.6(+0x3d240)[0x7f78855c2240]
/usr/lib64/libgtk-3.so.0(gtk_widget_get_window+0x19)[0x7f7887b125b9]
```

Can I get the source information corresponding to these printed
frames?

I've seen messages on the mailing list where people were asked to post
this sort of crash information on released microsoft windows builds
(without debug info), and an emacs dev could figure out the
information with access to the full debug libraries, but I've
forgotten how it is done.

--- Madhu