could you please review this bugfix for CTW library?
problem: assert in sun.hotspot.tools.ctw.Utils fails for jimage entry, b/c such entries have "/<module_name>/" prefix and module_name can have a period in it, e.g. '/java.activation/com/sun/activation/registries/LineTokenizer.class'
fix: remove module name from jimage entry names, so they will pass assert. this also made workaround in Utils::fileNameToClassName redundant, so it has been removed.