make unit-check fails to compile and run unit tests

[bbell]

several lines like this:

/home/bbell/projects/rasdaman/rasserver_x/test/clientquerystreamedresulttest.cc In member function ‘virtual void rasserver::test::ClientQueryStreamedResultTest_streamSmallSize_Test::TestBody()’:
/home/bbell/projects/rasdaman/rasserver_x/test/clientquerystreamedresulttest.cc:19:89: error: conversion to ‘uint64_t {aka long unsigned int}’ from ‘int’ may change the sign of the result [-Werror=sign-conversion]
     ClientQueryStreamedResult* result = new ClientQueryStreamedResult(data, dataSize, "");

appear when doing

make unit-check

in the build directory. These errors should be debugged so that unit testing can be used again.