Enable libfontconfig for solaris OS

packages/libfontconfig/fpmake.pp

@@ -20,7 +20,7 @@ begin
     P.Version:='3.3.1';
     P.SourcePath.Add('src');
     P.IncludePath.Add('src');
-    P.OSes := [linux] + AllBSDOses; // Darwin was tested!
+    P.OSes := [linux, solaris] + AllBSDOses; // Darwin was tested!
     T:=P.Targets.AddUnit('libfontconfig.pp');
     P.ExamplePath.Add('examples');
     P.Targets.AddExampleProgram('testfc.pp');