[2006-12-18] Default filetype to subpath (of data\) associations.

 Type | Subpath
------+-----------
  act | sprite\
  rma | model\
  gat | ?
  bmp | texture\
  tga | texture\
  jpg | texture\
  ebm | ..\_tmpEmblem\
  str | texture\effect\
  gnd | ?
  imf | imf\
  rsm | model\
  rsx | model\
  gr2 | model\3dmob\
  pal | palette\
  spr | sprite\
  wav | wav\
  rsw | ?