Rollback the boost sys lib inclusion in integ tests as it was causing dup symbols

indra/cmake/LLAddBuildTest.cmake

@@ -50,7 +50,6 @@ INCLUDE(GoogleMock)
     )
   SET(alltest_LIBRARIES
     ${GOOGLEMOCK_LIBRARIES}
-    ${BOOST_SYSTEM_LIBRARY}
     ${PTHREAD_LIBRARY}
     ${WINDOWS_LIBRARIES}
     )

indra/newview/CMakeLists.txt

@@ -2082,6 +2082,12 @@ if (LL_TESTS)
     LL_TEST_ADDITIONAL_LIBRARIES "${JSONCPP_LIBRARIES}"
   )
 
+  set_source_files_properties(
+    lllogininstance.cpp
+    PROPERTIES
+    LL_TEST_ADDITIONAL_LIBRARIES "${BOOST_SYSTEM_LIBRARY}"
+  )
+
   LL_ADD_PROJECT_UNIT_TESTS(${VIEWER_BINARY_NAME} "${viewer_TEST_SOURCE_FILES}")
 
   #set(TEST_DEBUG on)