Package the sources as flexdll

The flexdll package is intended for use when building OCaml in
"bootstrapped" flexdll mode and installs the required source files to
the share folder in an opam switch.

The .install can be used with both FlexDLL 0.42 and FlexDLL 0.43

Makefile

@@ -239,7 +239,7 @@ package_src:
 	rm -Rf flexdll-$(VERSION)
 	mkdir flexdll-$(VERSION)
 	mkdir flexdll-$(VERSION)/test
-	cp -a $(filter-out version.ml,$(OBJS:Compat.ml=Compat.ml.in)) Makefile msvs-detect $(COMMON_FILES) version.rc flexdll-$(VERSION)/
+	cp -a $(filter-out version.ml,$(OBJS:Compat.ml=Compat.ml.in)) Makefile msvs-detect $(COMMON_FILES) version.rc flexdll.install flexdll-$(VERSION)/
 	cp -aR test/Makefile test/*.c flexdll-$(VERSION)/test/
 	tar czf $(PACKAGE) flexdll-$(VERSION)
 	rm -Rf flexdll-$(VERSION)

flexdll.install

@@ -2,16 +2,10 @@ share: [
   "Makefile"
   "cmdline.ml"
   "coff.ml"
-  "?Compat401.ml"
-  "Compat402.ml"
-  "Compat403.ml"
-  "?Compat405.ml"
-  "?Compat406.ml"
-  "?Compat407.ml"
+  "Compat.ml.in"
   "create_dll.ml"
   "default.manifest"
   "default_amd64.manifest"
-  "?findwinsdk"
   "flexdll.c"
   "flexdll.h"
   "flexdll_initer.c"

flexdll.opam

@@ -0,0 +1,11 @@
+opam-version: "2.0"
+version: "0.43"
+authors: "Alain Frisch"
+maintainer: "David Allsopp <[email protected]>"
+bug-reports: "https://github.com/ocaml/flexdll/issues"
+dev-repo: "git+https://github.com/ocaml/flexdll.git"
+homepage: "https://github.com/ocaml/flexdll#readme"
+license: "Zlib"
+synopsis: "FlexDLL Sources"
+description: "Source package for FlexDLL. Installs the required files for
+bootstrapping FlexDLL as part of an OCaml build."