Finalize changes for 1.24.2.1+lenny1

Finalize changes for 1.24.2.1+lenny1

* Non-maintainer upload by the Security Team.

* checks/{control-files,files,menu-format,menus}:
  + [RG] Fix CVE-2009-4014: format string vulnerabilities
* checks/{fields,patch-systems}:
  + [RG] Fix CVE-2009-4013: missing control files sanitation
* checks/{files,patch-systems}:
  + [RG] Fix CVE-2009-4015: arbitrary command execution

* collection/objdump-info:
  + [RG] Fix CVE-2009-4015: arbitrary command execution
* collection/source-control-file:
  + [RG] Fix CVE-2009-4013: missing control files sanitation

* frontend/lintian:
  + [RG] Fix CVE-2009-4013: missing control files sanitation
  + [RG] Fix CVE-2009-4014: format string vulnerabilities

* lib/Util:
  + [RG] Fix CVE-2009-4015: arbitrary command execution

* unpack/unpack-{bin,src}pkg-l1:
  + [RG] Fix CVE-2009-4013: missing control files sanitation