Return error if node/link name is too long (#535)

* co-authored with @ehsan-shafiee

* removes errant slashes

* Throws correct error for ID name too long

* Revert "Throws correct error for ID name too long"

This reverts commit 57b4873f5882cb9fd983f7e1e5a703b9e442cd74.

* fixes #534 by bubbling error codes up from add node/link internal functions

* fixes tests on Mac at least

* fixes improper success code

* Error 252 (not 250) returned for ID name too long.

From errors.dat: DAT(252,"invalid ID name")

tests/util/CMakeLists.txt

@@ -1,5 +1,7 @@
 
-
+if(UNIX)
+    set(CMAKE_CXX_FLAGS "-std=c++11")
+endif(UNIX)
 
 # Sets for output directory for executables and libraries
 set(CMAKE_RUNTIME_OUTPUT_DIRECTORY ${CMAKE_BINARY_DIR}/bin)
@@ -24,4 +26,3 @@ add_executable(test_filemanager ./test_filemanager.cpp
                                 ../../src/util/cstr_helper.c)
 target_include_directories(test_filemanager PUBLIC ../../src/)
 target_link_libraries(test_filemanager ${Boost_LIBRARIES})
-