Minor fixes to Automake/Autoconf files, such as:

• Fix #17: add DESTDIR
• autoreconf include fix
• configure Perl program check
• Update m4 scripts to latest version

https://www.dns-oarc.net/files/dsc/dsp-2.0.1.tar.gz
sha256: 56911f2f28ce8d8c600e457319f57bb630a64f2a89895c6d80452c847b48b029

Packages are available at: https://dev.dns-oarc.net/packages/

cb5b223 Package
b7ef042 Funding
44f0f9f Prepare SPEC for OSB/COPR
e5d8987 RPM spec and various automake fixes
d42557b Fix #17: add DESTDIR
3358d7f Add Travis-CI build status
f839d0f Fix travis script, only expand dir and test.
52b5ca3 Add debian/ubuntu package files