Kill off the old 'tests' stuff. Write a ton of new tests for the

'testsuite' dir.  Fix a bunch of broken tests.  Fix the testsuite
'runtest' script so it actually reports all failures and provides
meaningful feedback.
 -Erik

testsuite/cp/cp-a-files-to-dir

@@ -8,7 +8,7 @@ busybox cp -a file1 file2 link1 dir1 there
 test -f there/file1
 test -f there/file2
 test ! -s there/dir1/file3
-test -l there/link1
-test `readlink there/link1` = "file2"
-test ! file3 -ot there/dir1/file3
-test ! file3 -nt there/dir1/file3
+test -L there/link1
+test xfile2 = x`readlink there/link1`
+test ! dir1/file3 -ot there/dir1/file3
+test ! dir1/file3 -nt there/dir1/file3

testsuite/cp/cp-a-preserves-links

@@ -2,4 +2,4 @@ touch foo
 ln -s foo bar
 busybox cp -a bar baz
 test -L baz
-test `readlink baz` = "foo"
+test xfoo = x`readlink baz`

testsuite/cp/cp-d-files-to-dir

@@ -7,5 +7,5 @@ busybox cp -d file1 file2 file3 link1 there
 test -f there/file1
 test -f there/file2
 test ! -s there/file3
-test -l there/link1
-test `readlink there/link1` = "file2"
+test -L there/link1
+test xfile2 = x`readlink there/link1`

testsuite/cp/cp-does-not-copy-unreadable-file

@@ -1,4 +1,6 @@
 touch foo
 chmod a-r foo
+set +e
 busybox cp foo bar
+set -e
 test ! -f bar

testsuite/cp/cp-preserves-links

@@ -2,4 +2,4 @@ touch foo
 ln -s foo bar
 busybox cp -d bar baz
 test -L baz
-test `readlink baz` = "foo"
+test xfoo = x`readlink baz`