Really check in MCI open string commands if the name we have is a
device (and no longer rely on bad heuristics for it).

- added the elf_is_in_thunk_area() function to locate an address
  within the known thunk area of Wine's builtin modules
- now passing this thunk information to the dwarf parser so that it
  can drop functions from the thunk areas (as dwarf symbols), so that
  those functions can be later on marked as thunks in dbghelp
  internals

Enhancement over previous fix (we don't need to insert NOTYPE symbols
in our public symbol table, so drop them as early as possible).

Compute the default verb as documented on MSDN instead of blindly
assuming it is 'open'. This fixes the WordViewer association in some
cases.

Tell gl to draw to the back buffer when a back buffer is used, do not
use the value from gl.

 - patch based on Francois Gouget Fix compilation with gcc 2.95 patch
 - moved some string to resources
 - fixed implementation of IPersistStream interface viewer

both the GET_GLX_DRAWABLE Escape and SwapBuffers call it.