Add preliminary support for generic serialization#160

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sdebionne wants to merge 2 commits intoboostorg:developfrom

sdebionne:add-generic-serialization-support

Commits on Jun 4, 2019

Add preliminary support for generic serialization
sdebionne
committed

Commits on Jul 8, 2019

Re-implement has_serialize trait in pure C++03 and move it to the serialization namespace
sdebionne
committed