Ingo Weinhold 986e4abce4 Add new API find_path[s](), find_path_for_path()
The new functions are meant to replace many uses of find_directory():
* find_paths() is supposed to be used when the directories of a certain
  kind in all installation directories are needed (e.g. font
  directories, add-on directory, etc.). Using this API makes code
  robust wrt addition or removal of installation locations.
* find_path() is supposed to be used when files/directories associated
  with a loaded program, library, or add-on need to be found (e.g. data
  files or global settings).
* find_path_for_path() is similar to find_path(), but it starts from a
  given path instead of an image.
2013-11-05 21:40:43 +01:00
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