[PATCH] data_smart: Drop default expand=False to getVarFlag [API change]

[Richard Purdie <richard.purdie@linuxfoundation.org>]

At some point in the future, getVarFlag should expand by default. To
get there from the current position, we need a period of time where the
expand parameter is mandatory.

This patch starts that process. Clear errors will result from any code
which doesn't provide this. Layers can be fixed with an expression
like:

sed -e 's:\(\.getVarFlag([^,()]*, [^,()]*\)):\1, False):g' -i `grep -ril getVar *`

Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
diff --git a/bitbake/lib/bb/data_smart.py b/bitbake/lib/bb/data_smart.py
index 79bec1b..d61ad53 100644
--- a/bitbake/lib/bb/data_smart.py
+++ b/bitbake/lib/bb/data_smart.py
@@ -663,7 +663,7 @@ class DataSmart(MutableMapping):
                 self.dict["__exportlist"]["_content"] = set()
             self.dict["__exportlist"]["_content"].add(var)
 
-    def getVarFlag(self, var, flag, expand=False, noweakdefault=False, parsing=False):
+    def getVarFlag(self, var, flag, expand, noweakdefault=False, parsing=False):
         local_var = self._findVar(var)
         value = None
         if flag == "_content" and var in self.overridedata and not parsing: