Use single place to define the version and increase version to 3.17.0 (#932)

 Use single place to define the version and increase version to 3.17.0 (#932)

* Use single place to define the version

Defining the version in fuse_common.h, is removed, it is defined
through meson and provided by "libfuse_config.h". I.e. it avoids
to define the version twice - once in meson and once in
fuse_common.h.

Ideal would be to set integers in the meson file and create the version
string from these integers. However, meson requires that "project"
is the first meson.build keyword - with that it requires to
set the version from a string and then major/minor/hotfix integers
are created from string split.

Signed-off-by: Bernd Schubert <bernd.schubert@fastmail.fm>
* Increase the version to 3.17.0

This is to prepare the branch for the next release.

Signed-off-by: Bernd Schubert <bernd.schubert@fastmail.fm>
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Signed-off-by: Bernd Schubert <bernd.schubert@fastmail.fm>