Apilint: properly parse packages with numbers

Test: python apilint_tests.py
Change-Id: Ib0ad635e3994bbcbfecefddbd4899c3551ab65cf

tools/apilint/apilint.py

@@ -224,7 +224,7 @@ class Class():
 
 
 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

tools/apilint/apilint_test.py

@@ -242,6 +242,10 @@ class V2ParserTests(unittest.TestCase):
         cls = self._cls("class Class {")
         return apilint.Field(cls, 1, raw, '', sig_format=2)
 
+    def test_parse_package(self):
+        pkg = apilint.Package(999, "package wifi.p2p {", None)
+        self.assertEquals("wifi.p2p", pkg.name)
+
     def test_class(self):
         cls = self._cls("@Deprecated @IntRange(from=1, to=2) public static abstract class Some.Name extends Super<Class> implements Interface<Class> {")
         self.assertTrue('deprecated' in cls.split)