Change sort order for source files (sort by compile time)

This should give slightly faster build times when
compiling in parallel with many threads.

Author: mgreter

Makefile.conf

@@ -2,45 +2,45 @@
 
 SOURCES = \
 	ast.cpp \
-	base64vlq.cpp \
-	bind.cpp \
-	check_nesting.cpp \
-	color_maps.cpp \
-	constants.cpp \
+	node.cpp \
 	context.cpp \
-	cssize.cpp \
-	emitter.cpp \
+	constants.cpp \
+	functions.cpp \
+	color_maps.cpp \
 	environment.cpp \
-	error_handling.cpp \
-	eval.cpp \
-	expand.cpp \
-	extend.cpp \
+	bind.cpp \
 	file.cpp \
-	functions.cpp \
-	inspect.cpp \
+	util.cpp \
 	json.cpp \
-	lexer.cpp \
-	listize.cpp \
-	memory_manager.cpp \
-	node.cpp \
-	output.cpp \
-	parser.cpp \
+	units.cpp \
+	values.cpp \
 	plugins.cpp \
 	position.cpp \
+	lexer.cpp \
+	parser.cpp \
 	prelexer.cpp \
+	eval.cpp \
+	expand.cpp \
+	listize.cpp \
+	cssize.cpp \
+	extend.cpp \
+	output.cpp \
+	inspect.cpp \
+	emitter.cpp \
+	check_nesting.cpp \
 	remove_placeholders.cpp \
 	sass.cpp \
 	sass_util.cpp \
 	sass_values.cpp \
 	sass_context.cpp \
 	sass_functions.cpp \
 	sass2scss.cpp \
-	source_map.cpp \
 	to_c.cpp \
 	to_value.cpp \
-	units.cpp \
+	source_map.cpp \
+	error_handling.cpp \
+	memory_manager.cpp \
 	utf8_string.cpp \
-	values.cpp \
-	util.cpp
+	base64vlq.cpp
 
 CSOURCES = cencode.c