move additional binaries from "$PMODULES_HOME/bin" to "$PMODULES_HOME/sbin"
Pmodules requires certain versions of utilities and tools. Up to version 0.99.7 everything is installed in "${PMODULES_HOME}/bin". Since this directory will be added to the PATH while initializing Pmodules, these binaries are going to replace equivalent system binaries like 'bash', 'tclsh', ...