Add contrib/jsonpathx

Author: Nikita Glukhov

contrib/jsonpathx/Makefile

@@ -0,0 +1,22 @@
+# contrib/jsonpathx/Makefile
+
+MODULE_big = jsonpathx
+OBJS = jsonpathx.o
+
+EXTENSION = jsonpathx
+DATA = jsonpathx--1.0.sql
+PGFILEDESC = "jsonpathx - extended JSON path item methods"
+
+REGRESS = jsonpathx_jsonb jsonpathx_json
+
+ifdef USE_PGXS
+PG_CONFIG = pg_config
+PGXS := $(shell $(PG_CONFIG) --pgxs)
+include $(PGXS)
+else
+subdir = contrib/jsonpathx
+top_builddir = ../..
+include $(top_builddir)/src/Makefile.global
+include $(top_srcdir)/contrib/contrib-global.mk
+endif
+