bitbake: ast: Improve function flags handling for EXPORT_FUNCTIONS

Currently, if you use one of the functions from EXPORT_FUNCTIONS,
the meaning of cleandirs and fakeroot are lost. This leads to the function
changing in behaviour depending upon it's caller context. This isn't intended
so add mapping for the cleandirs and fakeroot flags too.

This does break devtool in OE-Core and there is a separate fix for that.

[YOCTO #8621]

(Bitbake rev: b074f4aff00923acc5bf6649d204d541a79fd2b6)

Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

bitbake/lib/bb/parse/ast.py

@@ -223,7 +223,7 @@ class ExportFuncsNode(AstNode):
             for flag in [ "func", "python" ]:
                 if data.getVarFlag(calledfunc, flag, False):
                     data.setVarFlag(func, flag, data.getVarFlag(calledfunc, flag, False))
-            for flag in [ "dirs" ]:
+            for flag in ["dirs", "cleandirs", "fakeroot"]:
                 if data.getVarFlag(func, flag, False):
                     data.setVarFlag(calledfunc, flag, data.getVarFlag(func, flag, False))
             data.setVarFlag(func, "filename", "autogenerated")