Fix tests on MacOS.

This comes down to the lack of a 'seq' command (what?!) and the fact that
BSD "wc -l" returns extra whitespace, while the GNU version doesn't.  We
should be using numeric comparisons instead of string comparisons, and then
it's ok.

t/deps/basic/test.do

@@ -2,12 +2,12 @@ rm -f *.out *.log
 
 ../../flush-cache.sh
 redo-ifchange 1.out 2.out
-[ "$(cat 1.log | wc -l)" = 1 ] || exit 55
-[ "$(cat 2.log | wc -l)" = 1 ] || exit 56
+[ "$(cat 1.log | wc -l)" -eq 1 ] || exit 55
+[ "$(cat 2.log | wc -l)" -eq 1 ] || exit 56
 ../../flush-cache.sh
 touch 1.in
 redo-ifchange 1.out 2.out
-[ "$(cat 2.log | wc -l)" = 1 ] || exit 58
+[ "$(cat 2.log | wc -l)" -eq 1 ] || exit 58
 . ../../skip-if-minimal-do.sh
-[ "$(cat 1.log | wc -l)" = 2 ] || exit 57
+[ "$(cat 1.log | wc -l)" -eq 2 ] || exit 57
 

t/deps/dirtest/test.do

@@ -10,7 +10,7 @@ redo-ifchange t1
 C1="$(wc -l <dir1/log)"
 C2="$(wc -l <log)"
 . ../../skip-if-minimal-do.sh
-if [ "$C1" != 1 -o "$C2" != 2 ]; then
+if [ "$C1" -ne 1 -o "$C2" -ne 2 ]; then
 	echo "failed: t1>t1, c1=$C1, c2=$C2" >&2
 	exit 55
 fi

t/deps/doublestatic.do

@@ -8,4 +8,4 @@ redo-ifchange static1 static2
 
 COUNT=$(wc -l <static.log)
 . ../skip-if-minimal-do.sh
-[ "$COUNT" = 4 ] || exit 55
+[ "$COUNT" -eq 4 ] || exit 55

t/deps/gentest.do

@@ -18,4 +18,4 @@ redo-ifchange genfile1
 
 COUNT=$(wc -l <genfile.log)
 . ../skip-if-minimal-do.sh
-[ "$COUNT" = 2 ] || exit 77
+[ "$COUNT" -eq 2 ] || exit 77

t/deps/test2.do

@@ -3,7 +3,7 @@ redo t2
 redo t2
 OUT=$(cat t2.count | wc -l)
 . ../skip-if-minimal-do.sh
-if [ "$OUT" != 2 ]; then
+if [ "$OUT" -ne 2 ]; then
 	echo "t2: expected 2"
 	exit 43
 fi