libraries: add libarchive

<https://github.com/libarchive/libarchive>

.gitmodules

@@ -243,3 +243,6 @@
 [submodule "libraries/libexpat"]
 	path = libraries/libexpat
 	url = https://github.com/libexpat/libexpat
+[submodule "libraries/libarchive"]
+	path = libraries/libarchive
+	url = https://github.com/libarchive/libarchive

config.py

@@ -323,6 +323,31 @@ def sparse_paths(self):
         "db/skiplist_test.cc",
         "db/db_iter.cc",
         ]),
+    Library('libarchive', [
+        "libarchive/archive.h",
+        "libarchive/archive_write_disk_posix.c",
+        "libarchive/archive_read_support_format_zip.c",
+        "libarchive/archive_string.c",
+        "libarchive/archive_read_support_format_rar.c",
+        "libarchive/archive_read_support_format_iso9660.c",
+        "libarchive/archive_read_disk_posix.c",
+        "libarchive/archive_read_support_format_7zip.c",
+        "libarchive/archive_write_disk_windows.c",
+        "libarchive/archive_read_support_format_rar5.c",
+        "libarchive/archive_write_set_format_iso9660.c",
+        "libarchive/archive_read.c",
+        "cpio/cpio.c",
+        "libarchive/archive_read_disk_entry_from_file.c",
+        "contrib/android/config/windows_host.h",
+        "tar/write.c",
+        "libarchive/archive_read_support_format_tar.c",
+        "libarchive/archive_write_set_format_zip.c",
+        "libarchive/archive_read_disk_windows.c",
+        "libarchive/archive_read_support_format_mtree.c",
+        "libarchive/archive_entry.h",
+        "libarchive/archive_windows.c",
+        "tar/bsdtar.c",
+        ]),
     Library('libb2', [
         "src/blake2b.c",
         "src/blake2s.c",