Switch from vecLib to Accelerate

Conflicts:
	Makefile
Explicitly point to /usr/lib/libstdc++.dylib

Resolves matcaffe build errors like:

Undefined symbols for architecture x86_64:
  "std::string::find(char, unsigned long) const", referenced from:
      boost::basic_format<char, std::char_traits<char>, std::allocator<char> >::parse(std::string const&) in libcaffe.a(math_functions.o)
      int boost::io::detail::upper_bound_from_fstring<std::string, std::ctype<char> >(std::string const&, std::string::value_type, std::ctype<char> const&, unsigned char) in libcaffe.a(math_functions.o)
  "std::string::compare(char const*) const", referenced from:
      _mexFunction in matcaffe.o
      boost::shared_ptr<caffe::Dataset<std::string, std::string, caffe::dataset_internal::DefaultCoder<std::string>, caffe::dataset_internal::DefaultCoder<std::string> > > caffe::DatasetFactory<std::string, std::string>(std::string const&) in libcaffe.a(dataset_factory.o)
      boost::shared_ptr<caffe::Dataset<std::string, std::vector<char, std::allocator<char> >, caffe::dataset_internal::DefaultCoder<std::string>, caffe::dataset_internal::DefaultCoder<std::vector<char, std::allocator<char> > > > > caffe::DatasetFactory<std::string, std::vector<char, std::allocator<char> > >(std::string const&) in libcaffe.a(dataset_factory.o)
      boost::shared_ptr<caffe::Dataset<std::string, caffe::Datum, caffe::dataset_internal::DefaultCoder<std::string>, caffe::dataset_internal::DefaultCoder<caffe::Datum> > > caffe::DatasetFactory<std::string, caffe::Datum>(std::string const&) in libcaffe.a(dataset_factory.o)
      caffe::Filler<float>* caffe::GetFiller<float>(caffe::FillerParameter const&) in libcaffe.a(conv_layer.o)
      caffe::Filler<double>* caffe::GetFiller<double>(caffe::FillerParameter const&) in libcaffe.a(conv_layer.o)
      caffe::Filler<float>* caffe::GetFiller<float>(caffe::FillerParameter const&) in libcaffe.a(dummy_data_layer.o)

Conflicts:
	Makefile
Only include explicit libstdc++.dylib on OSX
Enable CuDNN
Merge pull request #1 from CellScope/cudnn

CuDNN and matcaffe support