Copied antenna symbol from gta02-core. Updated footprint, and added

new items to schematics.

- AUTHORS, components/INFO, components/antenna.lib: copied antenna symbol
  by Rene Harder from gta02-core
- modules/meander.fpd: changed pin "numbers" from "GND" and "FEED" to
  more conventional "1" and "2"
- wpan-atrf.pro, atrf.sch: added crystal and antenna to schematics

components/INFO

@@ -19,3 +19,6 @@ S: at86rf230
 # the rest is ground)
 S: xtal-4
 N: nx3225sa
+
+# Generic antenna with ground on pin 1, feed on pin 2
+S: antenna

components/antenna.lib

@@ -0,0 +1,21 @@
+EESchema-LIBRARY Version 2.3  Date: So 07 Jun 2009 10:26:34 CDT
+#
+# ANTENNA
+#
+DEF ANTENNA ANT 0 40 Y Y 1 F N
+F0 "ANT" 0 250 60 H V C CNN
+F1 "ANTENNA" 0 -250 60 H V C CNN
+DRAW
+P 3 0 1 5  -20 -90  20 -90  20 -90 N
+P 5 0 1 5  -50 -60  50 -60  50 -60  50 -60  50 -60 N
+P 3 0 1 0  -50 90  -50 90  -50 90 N
+S -100 150 100 -150 0 1 0 N
+P 6 0 1 5  50 90  0 40  0 90  0 40  -50 90  -50 90 N
+P 4 0 1 5  0 -60  0 40  50 90  50 90 N
+P 4 0 1 5  -35 -75  35 -75  35 -75  35 -75 N
+X ~ 1 300 -50 200 L 50 50 1 1 P
+X ~ 2 300 50 200 L 50 50 1 1 P
+ENDDRAW
+ENDDEF
+#
+#End Library