Use relative addressing in deferred unlinks.

* src/common.h (tar_dirname): New function.
* src/misc.c (normalize_filename_x): Make extern.
(tar_dirname): New function.
(tar_getcwd): Take into account absoulte pathnames.
* src/unlink.c (deferred_unlink) <dir_idx>: New member; keeps the
value of chdir_current at the moment of structure allocation.
(flush_deferred_unlinks): Use chdir_do and relative addressing.
(queue_deferred_unlink): Initialize dir_idx.
* tests/Makefile.am: Add new tests.
* tests/testsuite.at: Add new tests.
* tests/remfiles06.at: Fix description.
* tests/remfiles07.at: Fix description.
* tests/remfiles08.at: New test case.

tests/Makefile.am

@@ -166,6 +166,7 @@ TESTSUITE_AT = \
  remfiles05.at\
  remfiles06.at\
  remfiles07.at\
+ remfiles08.at\
  same-order01.at\
  same-order02.at\
  shortfile.at\

tests/remfiles06.at

@@ -22,8 +22,8 @@
 # References: <20130924145657.GM32256@shire.ontko.com>,
 #             http://lists.gnu.org/archive/html/bug-tar/2013-09/msg00045.html
 
-AT_SETUP([incremental with two -C])
-AT_KEYWORDS([incremental create remove-files remfiles06])
+AT_SETUP([remove with two -C])
+AT_KEYWORDS([remove-files remfiles06])
 
 AT_TAR_CHECK([
 AT_SORT_PREREQ

tests/remfiles07.at

@@ -19,8 +19,8 @@
 # Reported by: Nathan Stratton Treadway <nathanst@ontko.com>
 # References: <20130924185129.GO32256@shire.ontko.com>
 
-AT_SETUP([incremental with -C to absolute path])
-AT_KEYWORDS([incremental create remove-files remfiles07])
+AT_SETUP([remove with -C to absolute path])
+AT_KEYWORDS([create remove-files remfiles07])
 
 AT_TAR_CHECK([
 AT_SORT_PREREQ

tests/remfiles08.at

@@ -0,0 +1,48 @@
+# Process this file with autom4te to create testsuite. -*- Autotest -*-
+# Test suite for GNU tar.
+# Copyright 2013 Free Software Foundation, Inc.
+#
+# GNU tar is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation; either version 3 of the License, or
+# (at your option) any later version.
+#
+# GNU tar is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program.  If not, see <http://www.gnu.org/licenses/>.
+
+# Description: See remfiles06.at
+# Reported by: Nathan Stratton Treadway <nathanst@ontko.com>
+# References: <20130926050634.GW32256@shire.ontko.com>
+
+AT_SETUP([remove with -C to absolute and relative paths])
+AT_KEYWORDS([incremental create remove-files remfiles08])
+
+AT_TAR_CHECK([
+mkdir foo
+mkdir bar
+echo foo/foo_file > foo/foo_file
+echo bar/bar_file > bar/bar_file
+decho A
+tar -cvf foo.tar --remove-files -C `pwd`/foo . -C ../bar .
+decho B
+],
+[0],
+[A
+./
+./foo_file
+./
+./bar_file
+B
+.
+./foo.tar
+],
+[A
+B
+],[],[],[gnu])
+
+AT_CLEANUP

tests/testsuite.at

@@ -382,6 +382,7 @@ m4_include([remfiles04.at])
 m4_include([remfiles05.at])
 m4_include([remfiles06.at])
 m4_include([remfiles07.at])
+m4_include([remfiles08.at])
 
 AT_BANNER([Extended attributes])
 m4_include([xattr01.at])