Log Message:
Update xmame to version 0.59.2.

Changes since xmame-0.59.1 include:
- Updated the included zlib library to 1.1.4, which fixes a "double
  free" security vulnerability.
- Applied a fix for the fromance video driver.  (Takahiro Nogi)
- Fixed a potential crash and a linear interpolation bug in the ES550x
  sound driver.  (Aaron Giles)
- Fixed a crash in the renegade driver caused by a sound effect reading
  past the end of the ADPCM memory region.  (Phil Stroffolino)
- Fixed the following MAME testers bugs: blmbycar059red, uopoko059red,
  gcpinbal059red, jitsupro059red, metroc059red, phelios059red,
  paclandc059red, ncv1058red, av2mj059red, fromancec058red.  (Aaron Giles)