need a p_delete() function

[sanjmeh]

This is a request to add one function to the p_load series of functions. There must have a p_delete or p_remove function in your suite. This is badly needed as utils::remove.packages does a poor job in informing why the package was not removed. Also if the same package is installed in two libPaths it is very difficult to remove a package with just one command. A series of commands are needed and sometimes you have to manually delete the files from the libpath.