libtool: Alter expected line endings in testsuite

When comparing expected output in LT_AT_CHECK_EXECUTE, several tests
fail with mismatched line endings. This patch should fix Windows
environments that have CRLF text line endings disabled and only use
the LF character for line endings.

* tests/testsuite.at: Removed '\r' from awk's printf command.
diff --git a/tests/testsuite.at b/tests/testsuite.at
index a080d70..0d8c64e 100644
--- a/tests/testsuite.at
+++ b/tests/testsuite.at
@@ -284,7 +284,9 @@
 m4_define([LT_AT_HOST_DATA],
 [AT_DATA([$1], [$2])
 case $host_os in mingw* | windows*)
-  awk '{printf ("%s\r\n", [$]0);}' < $1 > $1.t && mv -f $1.t $1 ;;
+   awk '{printf ("%s\r\n", [$]0);}' < $1 > $1.t && mv -f $1.t $1;;
+cygwin*)
+   awk '{printf ("%s\n", [$]0);}' < $1 > $1.t && mv -f $1.t $1;;
 esac])