Do not distribute default COPYING and INSTALL

[thbeu]

I noticed that make dist-gzip expected a COPYING file which got removed/renamed by #64.

Makefile.am: installing './INSTALL'
Makefile.am: installing './COPYING' using GNU General Public License v3 file
Makefile.am:     Consider adding the COPYING file to the version control system
Makefile.am:     for your code, to avoid questions about which license your project uses

Also, the INSTALL file can be skipped.

[rouault]

I noticed that make dist-gzip expected a COPYING file which got removed/renamed by #64.

it would be desirable that the license file is copied in the tarball

[thbeu]

I noticed that make dist-gzip expected a COPYING file which got removed/renamed by #64.

it would be desirable that the license file is copied in the tarball

It does, they are called LICENSE-LGPL and LICENSE-MIT.

[rouault]

great. merging