Apilint: properly parse packages with numbers

Test: python apilint_tests.py
Change-Id: Ib0ad635e3994bbcbfecefddbd4899c3551ab65cf
diff --git a/tools/apilint/apilint.py b/tools/apilint/apilint.py
index 295e3de..643d377 100644
--- a/tools/apilint/apilint.py
+++ b/tools/apilint/apilint.py
@@ -224,7 +224,7 @@
 
 
 class Package():
-    NAME = re.compile("package(?: .*)? ([A-Za-z.]+)")
+    NAME = re.compile("package(?: .*)? ([A-Za-z0-9.]+)")
 
     def __init__(self, line, raw, blame):
         self.line = line