Add a basic .editorconfig file

.editorconfig

@@ -0,0 +1,29 @@
+# https://editorconfig.org/
+#
+# Approximate configuration for the Duktape code base.
+
+root = true
+
+[*.{c,h,c.in,h.in}]
+end_of_line = lf
+insert_final_newline = true
+charset = utf-8
+indent_style = tab
+indent_size = 8
+trim_trailing_whitespace = true
+
+[*.js]
+end_of_line = lf
+insert_final_newline = true
+charset = utf-8
+indent_style = space
+indent_size = 4
+trim_trailing_whitespace = true
+
+[Makefile]
+end_of_line = lf
+insert_final_newline = true
+charset = utf-8
+indent_style = tab
+indent_size = 8
+trim_trailing_whitespace = true

Makefile

@@ -945,7 +945,7 @@ sax-js:
 xmldoc:
 	# https://github.com/nfarina/xmldoc
 	# http://nfarina.com/post/34302964969/a-lightweight-xml-document-class-for-nodejs-javascript
-	$(GIT) clone --depth 1 https://github.com/nfarina/xmldoc.git 
+	$(GIT) clone --depth 1 https://github.com/nfarina/xmldoc.git
 FlameGraph:
 	# http://www.brendangregg.com/FlameGraphs/cpuflamegraphs.html
 	# https://github.com/brendangregg/FlameGraph