1. unify install.xml location

2. in ri_data.py, fix an error on Raid instance construction
3. in ri_func_dep.py, use common function ri_data.Group.get_install_pkgs()
4. in ri_install.py, add logic to config install.xml location
5. rename test.py to ri_main.py
6. in ri_main.py, add logic to set config.xml location
7. in ri_main.py, modify the way to get parameters.

interface/ri_func_dep.py

@@ -7,13 +7,7 @@ class Pkg():
 
 	@staticmethod
 	def set_list ():
-		for i in ri_data.Group.dict.values():
-			if i.install != 'no':
-				Pkg.list += i.mandatory
-				if i.selection == 'all':
-					Pkg.list += [ j[0] for j in i.optional ]
-				else:
-					Pkg.list += [ j[0] for j in i.optional if j[1] == 'yes' ]
+		list = ri_data.Group.get_install_pkgs()
 
 class FsType():
 	list = []