python/pybluez: ARCH fixes and cleanup.

Signed-off-by: dsomero <xgizzmo@slackbuilds.org>

python/pybluez/pybluez.SlackBuild

@@ -22,13 +22,21 @@
 # OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
 # ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 
-SRCNAM=PyBluez
-PRGNAM=$(echo $SRCNAM | tr [:upper:] [:lower:])
+PRGNAM=pybluez
 VERSION=0.18
-ARCH=${ARCH:-i486}
 BUILD=${BUILD:-1}
 TAG=${TAG:-_SBo}
 
+SRCNAM=PyBluez
+
+if [ -z "$ARCH" ]; then
+  case "$( uname -m )" in
+    i?86) ARCH=i486 ;;
+    arm*) ARCH=arm ;;
+       *) ARCH=$( uname -m ) ;;
+  esac
+fi
+
 CWD=$(pwd)
 TMP=${TMP:-/tmp/SBo}
 PKG=$TMP/package-$PRGNAM