Fix handling of symbols in other partition in symtab_node::binds_to_current_def_p

[Jan Hubicka]

Hi,
this patch makes binds_to_current_def_p to return true when the current
def is in other partition.  This is needed for modref to propagate info
on loads across partition boundary.

Bootstrapped/regtsted x86_64-linux, comitted.

	* symtab.c (symtab_node::binds_to_current_def_p): Also accept symbols
	defined in other partition.
diff --git a/gcc/symtab.c b/gcc/symtab.c
index 207c9e75890..bc2865f4121 100644
--- a/gcc/symtab.c
+++ b/gcc/symtab.c
@@ -2391,7 +2391,7 @@ symbol_table::symbol_suffix_separator ()
 bool
 symtab_node::binds_to_current_def_p (symtab_node *ref)
 {
-  if (!definition)
+  if (!definition && !in_other_partition)
     return false;
   if (transparent_alias)
     return definition