calm debug, and disable unless SC_FORMULAGROUP=1

Change-Id: I091d43dfa33f440edd50a1c937ef6e6f1930be4e

sc/qa/unit/ucalc.cxx

@@ -6224,6 +6224,9 @@ void Test::testCellTextWidth()
 
 void Test::testFormulaGrouping()
 {
+    if ( !getenv("SC_FORMULAGROUP") )
+        return;
+
     static const struct {
         const char *pFormula[3];
         const bool  bGroup[3];

sc/source/core/data/cell2.cxx

@@ -1748,7 +1748,7 @@ ScSimilarFormulaDelta *ScFormulaCell::BuildDeltaTo( ScFormulaCell *pOtherCell )
 
     if ( !pThis || !pOther )
     {
-        fprintf( stderr, "Error: no compiled code for cells !" );
+//        fprintf( stderr, "Error: no compiled code for cells !" );
         return NULL;
     }
 
@@ -1817,12 +1817,12 @@ bool ScFormulaCell::InterpretFormulaGroup()
     if( !xGroup.get() )
         return false;
 
-    fprintf( stderr, "Interpret cell %d, %d\n", (int)aPos.Col(), (int)aPos.Row() );
+//    fprintf( stderr, "Interpret cell %d, %d\n", (int)aPos.Col(), (int)aPos.Row() );
 
     if ( xGroup->mpDelta->IsInvariant() )
     {
-        fprintf( stderr, "struck gold - completely invariant for %d items !\n",
-                 (int)xGroup->mnLength );
+//        fprintf( stderr, "struck gold - completely invariant for %d items !\n",
+//                 (int)xGroup->mnLength );
 
         // calculate ourselves:
         InterpretTail( SCITP_NORMAL );

sc/source/core/data/column3.cxx

@@ -2119,7 +2119,7 @@ void ScColumn::RebuildFormulaGroups()
         }
     }
 
-#if 1 // OSL_DEBUG_LEVEL > 0
+#if OSL_DEBUG_LEVEL > 0
     if ( maDoubles.size() + maFnGroups.size() > 0 )
     {
         rtl::OUString aStr;

sc/source/core/data/documen9.cxx

@@ -697,6 +697,11 @@ void ScDocument::ApplyAsianEditSettings( ScEditEngineDefaulter& rEngine )
 
 void ScDocument::RebuildFormulaGroups()
 {
+    static const char *pEnableFormulaGroups = getenv("SC_FORMULAGROUP");
+
+    if ( !pEnableFormulaGroups )
+        return;
+
     SCTAB nTab;
     for (nTab=0; nTab < static_cast<SCTAB>(maTabs.size()); nTab++)
         if (maTabs[nTab])