c variadic calls

compiler/cimport/cimport.odin

@@ -46,10 +46,11 @@ Alias :: struct {
 }
 
 Function :: struct {
-	name:   string,
-	params: []Type_Id,
-	result: Type_Id,
-	reason: string,
+	name:     string,
+	params:   []Type_Id,
+	result:   Type_Id,
+	variadic: bool,
+	reason:   string,
 }
 
 Unsupported :: struct {

compiler/cimport/libclang.odin

@@ -338,9 +338,8 @@ visit_cursor :: proc "c"(cursor, parent: CXCursor, client_data: rawptr) -> i32 {
 		linkage := ctx.api.get_cursor_linkage(cursor)
 		if linkage != CXLinkage_External {
 			reason = "static and non-external C functions are not supported"
-		} else if ctx.api.cursor_is_variadic(cursor) != 0 {
-			reason = "C variadic functions are not supported"
 		}
+		variadic := ctx.api.cursor_is_variadic(cursor) != 0
 		function_type := ctx.api.get_cursor_type(cursor)
 		result_type := translate_type(ctx, ctx.api.get_result_type(function_type))
 		if result_type == INVALID_TYPE && len(reason) == 0 {
@@ -364,6 +363,7 @@ visit_cursor :: proc "c"(cursor, parent: CXCursor, client_data: rawptr) -> i32 {
 			name=fmt.aprintf("%s", name, allocator=ctx.allocator),
 			params=params[:],
 			result=result_type,
+			variadic=variadic,
 			reason=fmt.aprintf("%s", reason, allocator=ctx.allocator),
 		})
 	case CXCursor_TypedefDecl: