Blender Git Loki

Support for the STL (stereolithography) file format. Reads the ASCII and
binary subformats, and writes the binary subformat. Read is done with
usual F1, write is done in the menu 'File->Export Selected->STL'. Writes
meshes only, writing the 'displistmesh' if subsurf is on. The 'magic'
to determine whether it is reading the binary or ASCII subformat
could use a little work, but makes the correct choice most of the time.