Merge xapi-stdext as a vendored project

xapi-stdext uses dune-project to generate its opam files,
but this means we can't merge its opam files into the root because xapi is not using
that feature for its own opam files yet (and turning this feature on is all or nothing).
It'd be desirable to move xapi's opam files to be auto-generated, but separately from this PR.

For now declare stdext as a vendored project in dune, which allows keeping
the nested dune-project and the opam files in the subdir.

This means that dune won't expand aliases, so we need to add a separate
invocation of runtest and set --root otherwise the tests won't run at all.

Signed-off-by: Edwin Török <[email protected]>

Makefile

@@ -56,6 +56,8 @@ lint:
 TEST_TIMEOUT=600
 TEST_TIMEOUT2=1200
 test:
+	(cd ocaml/libs/xapi-stdext \
+	 && dune runtest --profile=$(PROFILE) --error-reporting=twice -j $(JOBS) --root .)
 	ulimit -S -t $(TEST_TIMEOUT); \
 	 (sleep $(TEST_TIMEOUT) && ps -ewwlyF --forest)& \
 	 PSTREE_SLEEP_PID=$$!; \
@@ -244,7 +246,8 @@ install: build doc sdk doc-json
 		message-switch message-switch-async message-switch-cli message-switch-core message-switch-lwt \
 		message-switch-unix xapi-idl forkexec xapi-forkexecd xapi-storage xapi-storage-script xapi-storage-cli \
 		xapi-nbd varstored-guard xapi-log xapi-open-uri xapi-tracing xapi-expiry-alerts cohttp-posix xapi-inventory \
-		xapi-rrd
+		xapi-rrd \
+		xapi-stdext-date xapi-stdext-encodings xapi-stdext-pervasives xapi-stdext-std xapi-stdext-threads xapi-stdext-unix xapi-stdext-zerocheck xapi-stdex
 # docs
 	mkdir -p $(DESTDIR)$(DOCDIR)
 	cp -r $(XAPIDOC)/jekyll $(DESTDIR)$(DOCDIR)
@@ -265,7 +268,8 @@ uninstall:
 		message-switch message-switch-async message-switch-cli message-switch-core message-switch-lwt \
 		message-switch-unix xapi-idl forkexec xapi-forkexecd xapi-storage xapi-storage-script xapi-log \
 		xapi-open-uri xapi-tracing xapi-expiry-alerts cohttp-posix xapi-inventory \
-		xapi-rrd
+		xapi-rrd \
+		xapi-stdext-date xapi-stdext-encodings xapi-stdext-pervasives xapi-stdext-std xapi-stdext-threads xapi-stdext-unix xapi-stdext-zerocheck xapi-stdext
 
 compile_flags.txt: Makefile
 	(ocamlc -config-var ocamlc_cflags;\

ocaml/libs/dune

@@ -0,0 +1 @@
+(vendored_dirs xapi-stdext)