Add dawn/sunrise/sunset/dusk tests.

tests/sun.rem

@@ -0,0 +1,13 @@
+SET $LatDeg 45
+SET $LatMin 24
+SET $LatSec 0
+SET $LongDeg 75
+SET $LongMin 39
+SET $LongSec 0
+SET $MinsFromUTC -300
+SET $CalcUTC 0
+
+MSG Dawn: [dawn()]
+MSG Sunrise: [sunrise()]
+MSG Sunset: [sunset()]
+MSG Dusk: [dusk()]

tests/test-rem

@@ -81,6 +81,8 @@ rm -f ../tests/purge_dir/*.rem.purged >> ../tests/test.out 2>&1
 
 ../src/remind -p ../tests/shade.rem 1 August 2009 | ../src/rem2ps -e -l -c3 >> ../tests/test.out 2>&1
 
+../src/remind -p12 ../tests/sun.rem 1 Jan 2011 >> ../tests/test.out 2>&1
+
 cmp -s ../tests/test.out ../tests/test.cmp
 if [ "$?" = "0" ]; then
    echo "Remind:  Acceptance test PASSED"