Configure script using our build programs in final steps

In order to get a consistent final result, in its later steps, the
configure script uses our own build of the basic command-line tools (like
`cat', `awk').

Also, a correction was made to the short option parsing errors when an
unwanted argument is given, and the `-?*' was changed to `-'?'*' to avoid
un-necessary shell interpretation (for example giving unreasonable
results).

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