“ed55f1b9d49ed3f6609246159594da85810a9a2e”上不存在“python/paddle/fluid/distribute_transpiler_simple.py”
* Add documentation of cross-compiling for iOS. * Correst the typo in documentation of cross-compiling for raspberry pi. * Set ANDROID_API to 21 when it is specified < 21 for arm64-v8a in build_android.sh. * Check the input and print the usage in MergeModel.cpp.