build: bison: build nolimips with bison

In order to avoid conflicts between the LRDE bison version needed to
build nolimips and the last bison version install on the host machine,
this commit gets bison from the LRDE tarball, build it and use it.

This commit fixes also some ugly tabulations and trailing whitespaces.

* .gitignore,
* bootstrap,
* build-aux/bin/bison++.in,
* build-aux/gitlog-to-changelog,
* configure.ac: here.
1 job for mj/bison-integration in 2 minutes and 1 second (queued for 1 second)
Status Job ID Name Coverage
  Test
failed #13407
debian-stable-gcc

00:02:01

 
Name Stage Failure
failed
debian-stable-gcc Test There has been a runner system failure, please try again
Running with gitlab-runner 11.0.2 (1db57d4a)
on node7 48edbc67
Using Docker executor with image registry.lrde.epita.fr/nolimips-sid ...
Pulling docker image registry.lrde.epita.fr/nolimips-sid ...
Using docker image sha256:11d46f8ea08a8b42e9f8f542024204a89ef1eea056520ee1a8f049d4c2638f31 for registry.lrde.epita.fr/nolimips-sid ...
ERROR: Job failed (system failure): Cannot connect to the Docker daemon at unix:///var/run/docker.sock. Is the docker daemon running?