Setup {DY,}LD_LIBRARY_PATH in clazy shell script
Setup {DY,}LD_LIBRARY_PATH in clazy shell script

Summary:
This allows us to launch clazy from the build folder without
installing it first. It also allows us to install clazy into
some path and launch it from there directly, without first having
to setup the environment manually.

Test Plan:
- launched clazy without installation from build dir
- installed clazy into an arbitrary path and launched from there

Reviewers: smartins

Reviewed By: smartins

Differential Revision: https://phabricator.kde.org/D5298

nyalldawson/clazy,nyalldawson/clazy,nyalldawson/clazy,nyalldawson/clazy