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.

sebastic/libkml-1,rashadkm/libkml-1,loctran17/libkml,sebastic/libkml-1,loctran17/libkml,sebastic/libkml-1,loctran17/libkml,sebastic/libkml-1,loctran17/libkml,rashadkm/libkml-1,rashadkm/libkml-1,sebastic/libkml-1,sebastic/libkml-1,rashadkm/libkml-1,loctran17/libkml,loctran17/libkml,rashadkm/libkml-1,sebastic/libkml-1,loctran17/libkml,rashadkm/libkml-1,sebastic/libkml-1,rashadkm/libkml-1,rashadkm/libkml-1,loctran17/libkml