fix trainer import error on ce (#10448)

* fix trainer import error on ce

* fix setup.py.in

python/paddle/fluid/__init__.py

@@ -60,6 +60,7 @@ __all__ = framework.__all__ + executor.__all__ + concurrency.__all__ +\
     'io',
     'initializer',
     'layers',
+    'transpiler'
     'nets',
     'optimizer',
     'learning_rate_decay',

python/paddle/fluid/trainer.py

@@ -19,6 +19,7 @@ import executor
 import data_feeder
 import contextlib
 import io
+import transpiler
 
 # optimizer is same as the parameter of Trainer.__init__. Rename it to opt_module
 import optimizer as opt_module

python/setup.py.in

@@ -68,7 +68,8 @@ packages=['paddle',
           'paddle.fluid',
           'paddle.fluid.proto',
           'paddle.fluid.proto.profiler',
-          'paddle.fluid.layers']
+          'paddle.fluid.layers',
+          'paddle.fluid.transpiler']
 
 if '${WITH_FLUID_ONLY}'== 'OFF':
     packages+=['paddle.proto',