scons: set HAVE_FUNC_ATTRIBUTE_ALIAS

Analogoust to the previous commit were we did so for autotools

Cc: Jose Fonseca <jfonseca@vmware.com>
Signed-off-by: Emil Velikov <emil.l.velikov@gmail.com>
Reviewed-by: Jose Fonseca <jfonseca@vmware.com>
1 file changed