* Makefile.in (tags-here): Put TAGS file in the source directory.

* examples/Makefile.in (tags): Likewise.
* testsuite/Makefile.in (tags): Likewise.
* tools/Makefile.in (tags): Likewise.

Rev: nettle/ChangeLog:1.10
Rev: nettle/Makefile.in:1.6
Rev: nettle/examples/Makefile.in:1.5
Rev: nettle/testsuite/Makefile.in:1.3
Rev: nettle/tools/Makefile.in:1.3