Currently the cctest target depend on the node_core_target_name
target. But it is the node_lib_target_name target that compiles the
sources now which means that if a source file in src is updated the
cctest executable will not be re-linked against it, but will remain
unchanged. The code will still be compiled, just not linked which
means that if you are debugging you'll not see the changes and also a
warning will be displayed about this issue.

This commit changes the cctest target to depend on node_lib_target_name.

It seems that these are not linked properly on Windows with out this.