[HBASE-14850]Will shared object client as task in near future?

[Andrzej]

It is necessary shared library to fast communicate with external world. 
Shared library would encapsulate all HBase possibilities and could be 
used in big external project, compiled outside HBase docker with many 
other dependecies.
There are two problems:
- smart pointers, which hinders simple pointers values as arguments and 
return values
- all code must be PIC, and is problem with libevent.a