Merge test suite.

testsuite/sed/sed-chains-substs

@@ -0,0 +1 @@
+test "$(echo foo | busybox sed -e s/foo/bar/ -e s/bar/baz/)" = baz

testsuite/sed/sed-handles-embedded-slashes

@@ -0,0 +1 @@
+test "$(echo fu/bar | busybox sed -e 's/[/]//')" = fubar

testsuite/sed/sed-handles-empty-lines

@@ -0,0 +1 @@
+test `echo | busybox sed -e 's/$/@/'` = @

testsuite/sed/sed-handles-unsatisfied-backrefs

@@ -0,0 +1,6 @@
+busybox sed -e 's/.*root=/\1/' >output <<EOF
+BOOT_IMAGE=vmlinuz root=/dev/hda5 initrd=init1
+EOF
+cmp -s output - <<EOF
+/dev/hda5 initrd=init1
+EOF

testsuite/sed/sed-prints-line-once-for-multiple-substs

@@ -0,0 +1,4 @@
+busybox sed -e s/1/2/g -e s/3/4/g >output <<EOF
+1
+EOF
+echo 2 | cmp -s output -