gdb::{unique_ptr,move} -> std::{unique_ptr,move}

Now that we require C++11, use std::unique_ptr and std::move directly.

gdb/ChangeLog:
2016-11-15  Pedro Alves  <palves@redhat.com>

	* ada-lang.c (create_excep_cond_exprs): Use std::move instead of
	gdb::move.
	* break-catch-throw.c (handle_gnu_v3_exceptions): Use
	std::unique_ptr instead of gdb::unique_ptr.
	* breakpoint.c (watch_command_1): Use std::move instead of
	gdb::move.
	* cli/cli-dump.c (dump_memory_to_file, restore_binary_file): Use
	std::unique_ptr instead of gdb::unique_ptr.
	* dtrace-probe.c (dtrace_process_dof_probe): Use std::move instead
	of gdb::move.
	* elfread.c (elf_read_minimal_symbols): Use std::unique_ptr
	instead of gdb::unique_ptr.
	* mi/mi-main.c (mi_cmd_data_read_memory): Use std::unique_ptr
	instead of gdb::unique_ptr.
	* parse.c (parse_expression_for_completion): Use std::move instead
	of gdb::move.
	* printcmd.c (display_command): std::move instead of gdb::move.

gdb/ada-lang.c

@@ -12347,7 +12347,7 @@ create_excep_cond_exprs (struct ada_catchpoint *c)
 	  s = cond_string;
 	  TRY
 	    {
-	      exp = gdb::move (parse_exp_1 (&s, bl->address,
+	      exp = std::move (parse_exp_1 (&s, bl->address,
 					    block_for_pc (bl->address),
 					    0));
 	    }
@@ -12360,7 +12360,7 @@ create_excep_cond_exprs (struct ada_catchpoint *c)
 	  END_CATCH
 	}
 
-      ada_loc->excep_cond_expr = gdb::move (exp);
+      ada_loc->excep_cond_expr = std::move (exp);
     }
 
   do_cleanups (old_chain);