run-tests: Don't assume running on x86

Also use $COPY_X86 for consistency.

run-tests.sh

@@ -52,9 +52,13 @@ if [ -z "$RUN_X86" ]; then
         export PATH=.:$PATH
         ;;
     *)
+        case $(uname -m) in
+        x86_64)
             RUN_X86=wine
             ;;
         esac
+        ;;
+    esac
 fi
 
 
@@ -80,7 +84,7 @@ for arch in $ARCHS; do
     case $arch in
     i686|x86_64)
         RUN="$RUN_X86"
-        COPY=
+        COPY="$COPY_X86"
         NATIVE="$NATIVE_X86"
         ;;
     armv7)