Another crosstool fix -- unistd.h must be included for unlink, close methods in some compilers.
Another crosstool fix -- unistd.h must be included for unlink, close methods in some compilers.

rashadkm/libkml,libkml/libkml,rashadkm/libkml,sebastic/libkml,rashadkm/libkml,sebastic/libkml,sebastic/libkml,sebastic/libkml,libkml/libkml,libkml/libkml,rashadkm/libkml,sebastic/libkml,sebastic/libkml,sebastic/libkml,libkml/libkml,sebastic/libkml,rashadkm/libkml,libkml/libkml