fpspreadsheet: try to fix date/time handling on Linux/Unix by adding clocale. Needs to be tested.

git-svn-id: https://svn.code.sf.net/p/lazarus-ccr/svn@3361 8e941d3f-bd1b-0410-a28a-d453659cc2b4

components/fpspreadsheet/tests/formattests.pas

@@ -10,6 +10,10 @@ units (e.g. datetests).
 }
 
 uses
+  {$IFDEF Unix}
+  //required for formatsettings
+  clocale,
+  {$ENDIF}
   // Not using Lazarus package as the user may be working with multiple versions
   // Instead, add .. to unit search path
   Classes, SysUtils, fpcunit, testutils, testregistry,

components/fpspreadsheet/tests/rpnformulaunit.pas

@@ -3,6 +3,9 @@ unit rpnFormulaUnit;
 interface
 
 uses
+  {$IFDEF Unix}
+  clocale, //required for formatsettings
+  {$ENDIF}
   SysUtils, fpspreadsheet,fpsutils;
 
 procedure WriteRPNFormulaSamples(Worksheet: TsWorksheet;