Applied patch from issue #542 (texture filtering inconsistencies) in main LÖVE repository

src/modules/graphics/Image.cpp

@@ -25,6 +25,8 @@ namespace love
 namespace graphics
 {
 
+Image::Filter Image::defaultFilter;
+
 Image::Filter::Filter()
 	: min(FILTER_LINEAR)
 	, mag(FILTER_LINEAR)
@@ -41,6 +43,16 @@ Image::~Image()
 {
 }
 
+void Image::setDefaultFilter(const Filter &f)
+{
+	defaultFilter = f;
+}
+
+const Image::Filter &Image::getDefaultFilter()
+{
+	return defaultFilter;
+}
+
 bool Image::getConstant(const char *in, FilterMode &out)
 {
 	return filterModes.find(in, out);