libsaria: Add in play count dattr

I want to track how often songs are played.  This patch gives me the
ability to do that.

libsaria/sources/__init__.py

@@ -14,8 +14,7 @@ attrs.load_dattrs()
 cur_id = None
 
 def inc_count():
-	# This will eventually increment a play count...
-	pass
+	attrs.inc_count(get_attrs("id")[0])
 
 def find_attrs(file, *attrs):
 	if file == None:
@@ -31,6 +30,8 @@ def find_attrs(file, *attrs):
 			res.append(id)
 		elif attr == "like":
 			res.append(attrs.get_dattr(id, "like"))
+		elif attr == "count":
+			res.append(attrs.get_count(id))
 		else:
 			res.append(get(attr))
 	return res

libsaria/sources/library/library.py

@@ -8,6 +8,7 @@ library_lock   = threading.Lock()
 lock_library   = library_lock.acquire
 unlock_library = library_lock.release
 get_dattr      = attrs.get_dattr
+get_count      = attrs.get_count
 
 # Map directory -> dict()
 lib_dict = None
@@ -66,6 +67,8 @@ def get_attrs(id, *attrs):
 			res.append(id)
 		elif attr == "like":
 			res.append(get_dattr(id, attr))
+		elif attr == "count":
+			res.append(get_count(id))
 		else:
 			res.append(get(attr))
 	unlock_library()