Update erl_tar to support PAX format, etc.

This commit introduces the following key changes:

- Support for reading tar archives in formats currently in common use,
  such as v7, STAR, USTAR, PAX, and GNU tar's extensions to the
  STAR/USTAR format.
- Support for writing PAX archives, only when necessary, using USTAR
  when possible for greater portability.

These changes result in lifting of some prior restrictions:

- Support for reading archives produced by modern tar implementations
  when other restrictions described below are present.
- Support for filenames which exceed 100 bytes in length, or paths which
  exceed 255 bytes (see USTAR format specification for more details on
  this restriction).
- Support for filenames of arbitrary length
- Support for unicode metadata (the previous behaviour of erl_tar was
  actually violating the spec, by writing unicode-encoded data to fields
  which are defined to be 7-bit ASCII, even though this technically
  worked when using erl_tar at source and destination, it may not have
  worked with other tar utilities, and this implementation now conforms
  to the spec).
- Support for uid/gid values which cannot be converted to octal
  integers.

10 files changed, 0 insertions, 0 deletions

diff --git a/lib/stdlib/test/tar_SUITE_data/bsd.tar b/lib/stdlib/test/tar_SUITE_data/bsd.tar
new file mode 100644
index 0000000000..8c31864be0
--- /dev/null
+++ b/lib/stdlib/test/tar_SUITE_data/bsd.tar
diff --git a/lib/stdlib/test/tar_SUITE_data/gnu.tar b/lib/stdlib/test/tar_SUITE_data/gnu.tar
new file mode 100644
index 0000000000..60268065c1
--- /dev/null
+++ b/lib/stdlib/test/tar_SUITE_data/gnu.tar
diff --git a/lib/stdlib/test/tar_SUITE_data/pax_mtime.tar b/lib/stdlib/test/tar_SUITE_data/pax_mtime.tar
new file mode 100644
index 0000000000..1b6e80ffac
--- /dev/null
+++ b/lib/stdlib/test/tar_SUITE_data/pax_mtime.tar
diff --git a/lib/stdlib/test/tar_SUITE_data/sparse00.tar b/lib/stdlib/test/tar_SUITE_data/sparse00.tar
new file mode 100644
index 0000000000..61a04de90b
--- /dev/null
+++ b/lib/stdlib/test/tar_SUITE_data/sparse00.tar
diff --git a/lib/stdlib/test/tar_SUITE_data/sparse01.tar b/lib/stdlib/test/tar_SUITE_data/sparse01.tar
new file mode 100644
index 0000000000..61a04de90b
--- /dev/null
+++ b/lib/stdlib/test/tar_SUITE_data/sparse01.tar
diff --git a/lib/stdlib/test/tar_SUITE_data/sparse01_empty.tar b/lib/stdlib/test/tar_SUITE_data/sparse01_empty.tar
new file mode 100644
index 0000000000..efa6d060f4
--- /dev/null
+++ b/lib/stdlib/test/tar_SUITE_data/sparse01_empty.tar
diff --git a/lib/stdlib/test/tar_SUITE_data/sparse10.tar b/lib/stdlib/test/tar_SUITE_data/sparse10.tar
new file mode 100644
index 0000000000..61a04de90b
--- /dev/null
+++ b/lib/stdlib/test/tar_SUITE_data/sparse10.tar
diff --git a/lib/stdlib/test/tar_SUITE_data/sparse10_empty.tar b/lib/stdlib/test/tar_SUITE_data/sparse10_empty.tar
new file mode 100644
index 0000000000..efa6d060f4
--- /dev/null
+++ b/lib/stdlib/test/tar_SUITE_data/sparse10_empty.tar
diff --git a/lib/stdlib/test/tar_SUITE_data/star.tar b/lib/stdlib/test/tar_SUITE_data/star.tar
new file mode 100644
index 0000000000..b0631e3b13
--- /dev/null
+++ b/lib/stdlib/test/tar_SUITE_data/star.tar
diff --git a/lib/stdlib/test/tar_SUITE_data/v7.tar b/lib/stdlib/test/tar_SUITE_data/v7.tar
new file mode 100644
index 0000000000..9918e006bb
--- /dev/null
+++ b/lib/stdlib/test/tar_SUITE_data/v7.tar