When downloading from binary cache not only replace RPATHs to dependencies, but
also text references to dependencies.
Example:
`autoconf@2.69` contains a text reference to the executable of its dependency
`perl`:
```
$ grep perl-5 /shared/spack/opt/spack/linux-amzn2-x86_64_v3/gcc-7.3.1/autoconf-2.69-q3lo/bin/autoreconf
eval 'case $# in 0) exec /shared/spack/opt/spack/linux-amzn2-x86_64_v3/gcc-7.3.1/perl-5.34.1-yphg/bin/perl -S "$0";; *) exec /shared/spack/opt/spack/linux-amzn2-x86_64_v3/gcc-7.3.1/perl-5.34.1-yphg/bin/perl -S "$0" "$@";; esac'
```
These references need to be replace or any package using `autoreconf` will fail
as it cannot find the installed `perl`.
Co-authored-by: Stephen Sachs <stesachs@amazon.com>
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