Package alt-gpgkeys: Information

- Added keys:
  etersoft-security@ (6F0D5886), etersoft-internal@ (72E83043)
  (closes: #24840).

- Replaced keys:
  gab@ (57AA7489 -> 45432555; closes: #24583).
- Added keys:
  alex@ (2B899CC8; closes: #24762).

- Updated keys:
  ldv@ (F7DDBB3A).
- Removed expired keys:
  atl@ (8E5A40B8; expired 2010-06-22);
  barabashka@ (19F61B3C; expired 2010-05-26);
  kharpost@ (8EC58E3D; expired 2010-08-14);
  robin@ (E3AB63F3; expired 2010-04-26).