Make install-tests target work with vpath builds
Also add a top-level install-tests target.
Backpatch to all live branches.
Craig Ringer, tweaked by me.
Branch
------
REL9_5_STABLE
Details
-------
https://git.postgresql.org/pg/commitdiff/bb45c5de2750f8aa5ab501aa327ababafed890d2
Modified Files
--------------
GNUmakefile.in | 1 +
src/test/regress/GNUmakefile | 4 ++--
2 files changed, 3 insertions(+), 2 deletions(-)