test: Use diff --strip-trailing-cr to fix tests on windows

test/signedunsigned1.test

diff --git a/test/signedunsigned1.test b/test/signedunsigned1.test
index dc752df..798de86 100755
--- a/test/signedunsigned1.test
+++ b/test/signedunsigned1.test
@@ -19,5 +19,5 @@
 $top_builddir/tools/plistutil -i $DATAIN0 -o $DATAOUT0
 $top_builddir/tools/plistutil -i $DATAIN1 -o $DATAOUT1
 
-diff $DATACMP0 $DATAOUT0
-diff $DATACMP1 $DATAOUT1
+diff --strip-trailing-cr $DATACMP0 $DATAOUT0
+diff --strip-trailing-cr $DATACMP1 $DATAOUT1

test/signedunsigned2.test

diff --git a/test/signedunsigned2.test b/test/signedunsigned2.test
index 8ae862c..2ea8b49 100755
--- a/test/signedunsigned2.test
+++ b/test/signedunsigned2.test
@@ -17,10 +17,7 @@
 DATAOUT1=$top_builddir/test/data/$TESTFILE1.bin
 
 $top_builddir/tools/plistutil -i $DATAIN0 -o $DATAOUT0
-cat $DATAOUT0
-
 $top_builddir/tools/plistutil -i $DATAIN1 -o $DATAOUT1
-cat $DATAOUT1
 
-diff $DATACMP0 $DATAOUT0
-diff $DATACMP1 $DATAOUT1
+diff --strip-trailing-cr $DATACMP0 $DATAOUT0
+diff --strip-trailing-cr $DATACMP1 $DATAOUT1

test/signedunsigned3.test

diff --git a/test/signedunsigned3.test b/test/signedunsigned3.test
index 9bada3e..d732e72 100755
--- a/test/signedunsigned3.test
+++ b/test/signedunsigned3.test
@@ -19,5 +19,5 @@
 $top_builddir/tools/plistutil -i $DATAIN0 -o $DATAOUT0
 $top_builddir/tools/plistutil -i $DATAIN1 -o $DATAOUT1
 
-diff $DATACMP0 $DATAOUT0
-diff $DATACMP1 $DATAOUT1
+diff --strip-trailing-cr $DATACMP0 $DATAOUT0
+diff --strip-trailing-cr $DATACMP1 $DATAOUT1