Copter: default Loiter Pos P to 0.8 (was 0.2)

ArduCopter/ReleaseNotes.txt

@@ -7,7 +7,7 @@ Improvements over 3.0.1-rc1
     a) double flash arming light when pre-arm checks fail
     b) relax mag field checks to 35% min, 165% max of expected field
 3) loiter and auto changes:
-      a) reduced Loiter Pos P to 0.2 (was 1.0)
+      a) reduced Loiter Pos P to 0.8 (was 1.0)
       b) reduced Loiter speed to 5 m/s
       c) reduced WP_ACCEL to 1 m/s/s (was 250  m/s/s)
       d) rounding error fix in loiter controller

ArduCopter/config.h

@@ -866,7 +866,7 @@
 // Loiter position control gains
 //
 #ifndef LOITER_P
- # define LOITER_P             		0.2f
+ # define LOITER_P             		0.8f
 #endif
 #ifndef LOITER_I
  # define LOITER_I             		0.0f