Close #326 (CLANG warnings about some enum hackery...)

It's a pretty convoluted workaround for some annoying C++ restrictions.
And some CLANG versions -- unfortunately including the one in the GitHub
Ubuntu GHA runner... -- even crashed on it, so it used to be even more
convoluted, also having to work around that... But this commit is a new
test to see if that broken version has been replaced at GH perhaps...

include/sfw/Geometry.hpp

@@ -17,14 +17,19 @@ namespace sfw
 	//!! there's no mandatory `Orientation::` qualifiers, but only for selected
 	//!! names, where that makes sense. Also, implicit num. conversions work.
 	{
-		enum _symbolic_ : int {
-		Unknown = sfw::Param::Unknown, //!! The extra `Param::` is for trying to avoid a CLANG-14 crash! :-o
-		UseDefault = sfw::Param::UseDefault,
+		enum _symbolic_ : int
+		{
+#pragma clang diagnostic push
+#pragma clang diagnostic ignored "-Wshadow"
+		//!! Note: an extra `Param::` for these two may be needed to work around a CLANG-14 crash I encountered! :-o
+		Unknown = sfw::Unknown,
+		UseDefault = sfw::UseDefault,
 			// `Default` would be hopelessly ambiguous: should it directly
 			// encode a value (like `Horizontal`), and then remain hardcoded
 			// + possibly too context-specific forever, or should it have a
 			// dedicated pseudo-value meaning "use the actually configured
 			// default for the given usage context"?...
+#pragma clang diagnostic pop
 
 		Horizontal = 1,
 		Vertical = Horizontal << 1, // Support Horizontal|Vertical

include/sfw/util/generic.hpp

@@ -3,7 +3,8 @@
 
 namespace sfw
 {
-	struct _unnamed_enum_Param_thanks_cplusplus_
+//	struct _Param__manually_scoped_enum_thanks_cplusplus_
+	struct Param
 	{
 		enum _symbolic_ : int {
 			Unknown = 0,
@@ -13,11 +14,14 @@ namespace sfw
 		operator int()        { return value; }
 	};
 
-	using _unnamed_enum_Param_thanks_cplusplus_::Unknown,
-	      _unnamed_enum_Param_thanks_cplusplus_::UseDefault;
+/*	using _Param__manually_scoped_enum_thanks_cplusplus_::Unknown,
+	      _Param__manually_scoped_enum_thanks_cplusplus_::UseDefault;
+*/
+	using Param::Unknown,
+	      Param::UseDefault;
 
- 	//!! The extra ceremony is for trying to avoid a CLANG-14 crash! :-o
-	using Param = _unnamed_enum_Param_thanks_cplusplus_;
+// 	//!! And this extra renaming ceremony is for trying to avoid a CLANG-14 crash on the GitHub Ubuntu GHA runner! :-o
+//	using Param = _Param__manually_scoped_enum_thanks_cplusplus_;
 
 } // namespace