tests: add two more tests of orphaned inode handling

Add two tests, f_orphan_indirect_inode, and f_orphan_extents_inode,
which tests the bug fixes in the two previous commits:

e2fsck: update global free blocks/inodes count when truncating orphan inodes
libext2fs: fix block iterator for extents when truncating inodes

Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>

tests/f_orphan_extents_inode/expect.1

@@ -0,0 +1,10 @@
+Truncating orphaned inode 12 (uid=0, gid=0, mode=0100644, size=0)
+Pass 1: Checking inodes, blocks, and sizes
+Pass 2: Checking directory structure
+Pass 3: Checking directory connectivity
+Pass 4: Checking reference counts
+Pass 5: Checking group summary information
+
+test_filesys: ***** FILE SYSTEM WAS MODIFIED *****
+test_filesys: 12/16 files (0.0% non-contiguous), 21/100 blocks
+Exit status is 1

tests/f_orphan_extents_inode/expect.2

@@ -0,0 +1,7 @@
+Pass 1: Checking inodes, blocks, and sizes
+Pass 2: Checking directory structure
+Pass 3: Checking directory connectivity
+Pass 4: Checking reference counts
+Pass 5: Checking group summary information
+test_filesys: 12/16 files (0.0% non-contiguous), 21/100 blocks
+Exit status is 0

tests/f_orphan_extents_inode/name

@@ -0,0 +1 @@
+truncating an orphaned extent-mapped inode

tests/f_orphan_indirect_inode/expect.1

@@ -0,0 +1,2 @@
+test_filesys: clean, 12/16 files, 21/100 blocks
+Exit status is 0

tests/f_orphan_indirect_inode/expect.2

@@ -0,0 +1,7 @@
+Pass 1: Checking inodes, blocks, and sizes
+Pass 2: Checking directory structure
+Pass 3: Checking directory connectivity
+Pass 4: Checking reference counts
+Pass 5: Checking group summary information
+test_filesys: 12/16 files (0.0% non-contiguous), 21/100 blocks
+Exit status is 0

tests/f_orphan_indirect_inode/name

@@ -0,0 +1 @@
+truncating an orphaned inode in preen mode

tests/f_orphan_indirect_inode/script

@@ -0,0 +1,2 @@
+FSCK_OPT=-p
+. $cmd_dir/run_e2fsck