Search component footprint text

- Added footprint text to search string for each component.

eeschema/class_libentry.cpp

@@ -1350,6 +1350,14 @@ LIB_FIELD& LIB_PART::GetReferenceField()
 }
 
 
+LIB_FIELD& LIB_PART::GetFootprintField()
+{
+    LIB_FIELD* field = GetField( FOOTPRINT );
+    wxASSERT( field != NULL );
+    return *field;
+}
+
+
 bool LIB_PART::SaveDateAndTime( OUTPUTFORMATTER& aFormatter )
 {
     int year, mon, day, hour, min, sec;

eeschema/class_libentry.h

@@ -437,6 +437,9 @@ public:
     /** Return reference to the reference designator field. */
     LIB_FIELD& GetReferenceField();
 
+    /** Return reference to the footprint field */
+    LIB_FIELD& GetFootprintField();
+
     /**
      * Draw part.
      *

eeschema/cmp_tree_model.cpp

@@ -142,6 +142,24 @@ CMP_TREE_NODE_ALIAS::CMP_TREE_NODE_ALIAS( CMP_TREE_NODE* aParent, LIB_ALIAS* aAl
     MatchName   = aAlias->GetName().Lower();
     SearchText  = (aAlias->GetKeyWords() + "        " + Desc).Lower();
 
+    // Extract default footprint text
+    LIB_PART* part = aAlias->GetPart();
+
+    wxString footprint;
+
+    if( part )
+    {
+        footprint = part->GetFootprintField().GetText();
+    }
+
+    // If a footprint is defined for the part,
+    // add it to the serach string
+    if( !footprint.IsEmpty() )
+    {
+        SearchText += "        ";
+        SearchText += footprint.Lower();
+    }
+
     if( aAlias->GetPart()->IsMulti() )
     {
         for( int u = 1; u <= aAlias->GetPart()->GetUnitCount(); ++u )