move sources to src directory

Rsconscript

@@ -9,13 +9,15 @@ end
 
 build do
   Environment.new do |env|
-    subdirs = %w[util shapes main distrib parser]
     env["CCFLAGS"] += %w[-Wall -O2]
-    env["CPPPATH"] += %w[.] + subdirs + ["#{env.build_root}/parser"]
-    sources = glob("{#{subdirs.join(",")}}/*.cc")
+    env["CPPPATH"] += glob("src/**")
+
+    env.CFile("^/parser/lexer.cc", "src/parser/parser.ll")
+    env.CFile("^/parser/parser.cc", "src/parser/parser.yy")
+    env["CPPPATH"] += ["#{env.build_root}/parser"]
+
+    sources = glob("src/**/*.cc")
     sources += ["^/parser/lexer.cc", "^/parser/parser.cc"]
-    env.CFile("^/parser/lexer.cc", "parser/parser.ll")
-    env.CFile("^/parser/parser.cc", "parser/parser.yy")
     env.Program("fart", sources)
   end
 end