[PATCH INCLUDED] Binary STLs entitled 'solid ...' trigger ascii STL loader about jsc3d HOT 2 OPEN

thanks Triffid! It seems that the exsting detection routine is not robust 
enough. I have rewritten the codes and adopt a new way to do this. the new 
method looks like this:

bool isBinary = false;
if(file size > the min file size of a binary stl file) {
  assume this is a binary file and take a snippet of bytes following the file header
  for(each byte) {
    if(the byte code > 127) {
      isBinary = true;
      break;
    }
  }
}

if(isBinary)
  read as a binary file
else
  read as an ascii file

this method is introduced by 3ds Max and also used in MeshLab and it works 
perfectly.
I have commited the new code into the repository. great!

uuups! forgiveme! i do a mistake with the right permissions on FTP. Very stupid 
from my own... i'm able to load up to 9M STL files.