Move contents of builtins/* to stdlib/*. This simplifies finding stubs.

stdlib/3/unicodedata.pyi

@@ -0,0 +1,37 @@
+# Stubs for unicodedata (Python 3.4)
+#
+# NOTE: This dynamically typed stub was automatically generated by stubgen.
+
+from typing import Any
+
+ucd_3_2_0 = ... # type: Any
+ucnhash_CAPI = ... # type: Any
+unidata_version = ... # type: str
+
+def bidirectional(unichr): ...
+def category(unichr): ...
+def combining(unichr): ...
+def decimal(chr, default=...): ...
+def decomposition(unichr): ...
+def digit(chr, default=...): ...
+def east_asian_width(unichr): ...
+def lookup(name): ...
+def mirrored(unichr): ...
+def name(chr, default=...): ...
+def normalize(form, unistr): ...
+def numeric(chr, default=...): ...
+
+class UCD:
+    unidata_version = ... # type: Any
+    def bidirectional(self, unichr): ...
+    def category(self, unichr): ...
+    def combining(self, unichr): ...
+    def decimal(self, chr, default=...): ...
+    def decomposition(self, unichr): ...
+    def digit(self, chr, default=...): ...
+    def east_asian_width(self, unichr): ...
+    def lookup(self, name): ...
+    def mirrored(self, unichr): ...
+    def name(self, chr, default=...): ...
+    def normalize(self, form, unistr): ...
+    def numeric(self, chr, default=...): ...