packages/libiconv: Battle libiconv to not use a rpath (and fix the uclibc build)

packages/libiconv: Battle libiconv to not use a rpath (and fix the uclibc build)
    -Update libiconv to 1.11 (the latest)
    -We do not package the LD_PRELOADable libiconv stub
    -Try hard to disable the rpath issue and.
        --disable-rpath doesn't disable the roath
        --disable-rpath=no (wasn't tested and if it works....)
        --enable-relocatable says to imply --disable-rpath but that doesn't work.
        Also the files can't be regenerated as the Makefile.am doesn't exist and
        people patch the Makefile.in.
    As a last resort fail back to some GNU sed to patch *-libtool to make sure that
    hardcoding of rpaths will fail!