@@ -, +, @@ 
    Fix compile error "isatty was not declared"; missing unistd.h include
    
    When I built apitrace on Fedora 16, using the usual:
    
    	cmake -H. -Bbuild
    	make -C build
    
    ...then I got this compile error:
    
    	apitrace/cli/cli_dump.cpp: In function ‘int command(int, char**)’:
    	apitrace/cli/cli_dump.cpp:176:25: error: ‘isatty’ was not declared in this scope
--- a/cli/cli_dump.cpp	
+++ a/cli/cli_dump.cpp	
@@ -28,6 +28,9 @@ 
 #include <string.h>
 #include <limits.h> // for CHAR_MAX
 #include <getopt.h>
+#ifndef _WIN32
+#include <unistd.h> // for isatty()
+#endif
 
 #include "cli.hpp"
 #include "cli_pager.hpp"