updated bowtie2 and grimaces

- bowtie2: in version 2.2.4 of bowtie2, more/other executables are present to check
- gromacs: removed inconsistencies for version >= 5.0
That's because they changed the build system between 4.x and 5.x. It still doesn't mean it will always end up in `lib64`, CMake can decide otherwise. Use the tuple versions of the sanity check (check the develop branch).