Also modify existing kernel so it works within the builder framework

and remove broadcast, which will be replaced with an Eigen implementation

This allows op builders to be self-contained changesets

* update version and add glossary defs

* clean up graph rewrite code blocks

* PR feedback

* add better details to LSTM def

* RNN def generalized

* adding fancy formulas to RNN def glossary entry

* Address API breaking change in PR 1164

* all of the documentation re default install path needed updated with pr 1164

* Assert manual compilation process to build ngraph_dist locally as a sensible default

* IntelGPUBackend: const, div, maxpool and max operations

* IntelGPUBackend: negative, abs, relu, sqrt, tanh and substract operations

* Update intelgpu_backend.cpp

* make pool test check backends other than CPU

* more unit test cleanup

* onnx: add 'constant' operator
Signed-off-by: Artur Wojcik <artur.wojcik@intel.com>

* onnx: getting attribute value by name
Signed-off-by: Artur Wojcik <artur.wojcik@intel.com>

* onnx: fix code style
Signed-off-by: Artur Wojcik <artur.wojcik@intel.com>

* onnx: fix clang compilation warnings
Signed-off-by: Artur Wojcik <artur.wojcik@intel.com>

* onnx: incorporate review comments
Signed-off-by: Artur Wojcik <artur.wojcik@intel.com>

* cpu loop kernel fusion pass

*  remove extra code

* bounded relu test

* address scotts feedback

* IntelGPUBackend: BatchNorm 5x1 operation

* Update intelgpu_op_batchnorm.cpp

* PR1244 Comments are adressed

* Fix a segfault in the strided conv optimization

* Only bail if all *live* users are not Convolution

* Draft of updates for JIRA tasks WIP

* meta to correct spelling