Treat cygwin perl as a win32 platform indicator.

Default to unix if platform is neither win32 nor mac.
Bug #166105 r=gerv a=asa

config/make-chromelist.pl

@@ -68,9 +68,9 @@ my $nofilelocks = $flock ? ($flock eq "-l") : 0;
 # chrome your platform uses. There are currently three sorts of chrome:
 # win, mac, and unix.
  
-my $win32 = ($^O =~ /((MS)?win32)|os2/i) ? 1 : 0;
-my $unix  = ($^O =~ /linux/i)            ? 1 : 0;
+my $win32 = ($^O =~ /((MS)?win32)|cygwin|os2/i) ? 1 : 0;
 my $macos = ($^O =~ /MacOS|darwin/i)     ? 1 : 0;
+my $unix  = !($win32 || $macos)          ? 1 : 0;
 
 # Testing only - generate chromelist.txt for other platforms
 # $macos = 1;