cleaning without -f

[Wesley W. Terpstra]

Oh, and there is another bug in --mode=clean. (not fixed by my previous patch)
This one needs a decision by the libtool maintainers.

When cleaning out an libtool executable (shell script) WIHOUT 'rm -f' and
only 'rm', you will get this error:

rm main/test main/.libs/test main/.libs/testS.o main/.libs/lt-test
rm: cannot remove `main/.libs/testS.o': No such file or directory

The problem is that .libs/lt-test and .libs/testS.o do not necessarily
exist. They are only created at some points in the execute/install cycle.

Please note, this bug has always existed. It doesn't matter if the
executable is in a subdirectory or not. Simply cleaning without '-f' with
any dynamically linked executables (and prior to running & installing them)
will trigger it.

I think there are at least three solutions:
        implicitly add '-f' to all invokations of --mode=clean
        implicitly add '-f' to executable cleaning
        test executable shell script existence in ltmain.in and give an
                error ourselves if it doesn't exist, if it does, use '-f'

I am in favour of the last one, but ... not my code.

-- 
Wesley W. Terpstra <address@hidden>