Log Message:
a2ps: update to 4.15.

* Noteworthy changes in release 4.15 (2023-03-07) [stable]
 * New maintainer, Reuben Thomas.
 * Features:
   - Replace the 'psmandup' utility with simpler 'lp2' to directly print
     documents to a simplex printer.
   - Remove the outdated 'psset' and 'fixnt', and simplify 'fixps' to
     always process its input with Ghostscript.
   - Use libpaper's paper sizes. This includes user-defined paper sizes
     when using libpaper 2. It is still possible to define custom margins
     using "Medium:" specifications in the configuration file, and the
     one size defined by a2ps that libpaper does not know about, Quarto, is
     retained for backwards compatiblity, and as an example.
 * Documentation
   - Remove some obsolete explanations.
   - Reformat --help output consistently to 80 columns.
   - Some English fixes.
 * Bug fixes:
   - Avoid a crash when a medium is not specified; instead, use the default
     libpaper size (configured by the user or sysadmin, or the locale
     default).
   - Fix some other potential crashes and compiler warnings.
   - Fixes for security bugs CVE-2001-1593, CVE-2015-8107 and CVE-2014-0466.
   - Minor bugs fixed.
 * Predefined delegations:
   - Remove support for defunct Netscape and proprietary Acrobat Reader.
   - Add lpr wrapper for automatic detection of different printing systems,
     including CUPS support.
 * Encodings:
   - Use libre fonts for KOI-8.
   - Composite fonts support.
 * Build
   - Update build system to more recent autotools and gettext versions.
   - Build man pages in a simpler and more robust way.
   - Document runtime dependencies.
   - Minor code quality improvements.
   - Minor tidy up and removal of obsolete code.
   - Require libpaper.
   - Remove OS/2 support.