[quotes] Removed

quotes.txt was a rather strange fit with the rest of the tools,
since it was not really a tool.  Because of that, this commit
removes the file from the collection all together.
[foreach] A new tool for running command for each argument

In a sense it is similar to plain for loop in shell, but it can
execute many jobs at once which is useful when running on SMP
system.  For instance “foreach -j4 -- bzip2 -9 -- *” will run
four instances of bzip2 compressing all files in current directory.