Misc output cleanup and a test run script.

private/runtest.sh

@@ -0,0 +1,21 @@
+python xenia-build.py xethunk
+python xenia-build.py build
+
+rm build/$1*
+
+./build/xenia/release/xenia-run \
+    private/$1 \
+    --optimize_ir_modules=false \
+    --optimize_ir_functions=false \
+    2>build/run.llvm.txt 1>build/run.txt
+
+if [ ! -s build/run.llvm.txt ]; then
+  rm build/run.llvm.txt
+fi
+
+if [ -e build/$1-preopt.bc ]; then
+  ./build/llvm/release/bin/llvm-dis build/$1-preopt.bc
+fi
+if [ -e build/$1.bc ]; then
+  ./build/llvm/release/bin/llvm-dis build/$1.bc
+fi