Expose the real path of a loaded module (potentially read from
WINEDLLDIR or WINEBUILDDIR or overriden load order or ...).  This
improves gdb integration by passing the real path to the loaded
modules (instead of the paths in c:\windows\ system subdirectories).
Introduce new Wine only dbghelp's extended option to enable the
feature.

Wine-Bug: https://bugs.winehq.org/show_bug.cgi?id=54250Signed-off-by: Eric Pouech <eric.pouech@gmail.com>