Log Message:
Initial import of Libtar, version 1.2.5, into the NetBSD Packages Collection.

Libtar is a library for manipulating tar files from within C programs.
Key features:

  - Handles both POSIX 1003.1-1990 tar file format and the GNU extensions.
  - API provides functions for easy use, such as tar_extract_all().
  - Also provides functions for more granular use, such as 
    tar_append_regfile().
  - Support compressed tar file by way of zlib.