Remove files that shouldn't be in testdata

And change default output of program to stop creating them there.

octopy/__main__.py

@@ -1,3 +1,4 @@
+import os
 import sys
 
 from octopy.assemble import assemble
@@ -9,19 +10,23 @@
 
     f = open(sys.argv[1])
 
+    path, filename = os.path.split(sys.argv[1])
+    basename, ext = os.path.splitext(filename)
+
+
     program = assemble(f)
 
     if len(sys.argv) > 2:
         outname = sys.argv[2]
     else:
-        outname = sys.argv[1].split(".")[0] + ".ch8"
+        outname = basename + ".ch8"
     fout = open(outname, 'w')
     fout.buffer.write(program.program)
 
     if len(sys.argv) > 3:
         outname = sys.argv[3]
     else:
-        outname = sys.argv[1].split(".")[0] + ".sym"
+        outname = basename + ".sym"
 
     fout = open(outname, 'w')
     for name, pc in program.labels.items():

scripts/testprogram.sh

@@ -1,5 +1,5 @@
 #!/bin/sh
 
 # Test that the main program runs as expected
-python3 -m octopy test/testdata/loop.8o
-cmp test/testdata/loop.8o.ch8 test/testdata/loop.expect.ch8
+python3 -m octopy test/testdata/fibble.8o
+cmp fibble.ch8 test/testdata/fibble.expect.ch8