Adds .gitignore rules for files generated by autoreconf

When running `autoreconf -fvi`, several files were generated
that were not ignored by the existing .gitignore rules:
```
aclocal.m4 configure m4/libtool.m4 m4/ltoptions.m4 m4/ltsugar.m4
m4/ltversion.m4 m4/lt~obsolete.m4
```

All should now be ignored.
Adds built executables to .gitignore
Merge pull request #91 from wtsi-hgi/gitignore-m4-configure

Adds .gitignore rules for files generated by autoreconf
Adds support for "not like" and "in" query conditions.
Merge branch 'devel' of https://github.com/wtsi-npg/baton into feature/query-notlike-in
Merge pull request #92 from wtsi-hgi/feature/query-notlike-in

Adds support for "not like" and "in" query condition operators (fixes #90)