[api] Relocate `intf` modules according to dependency-order.

In a component-based source code organization of Coq `intf` doesn't
fit very well, as it sits in bit of "limbo" between different
components, and indeed, encourages developers to place types in
sometimes random places wrt the hierarchy. For example, lower parts of
the system reference `Vernacexpr`, which morally lives in a pretty
higher part of the system.

We move all the files in `intf` to the lowest place their dependencies
can accommodate:

- `Misctypes`: is used by Declaremod, thus it has to go in `library`
  or below. Ideally, this file would disappear.
- `Evar_kinds`: it is used by files in `engine`, so that seems its
  proper placement.
- `Decl_kinds`: used in `library`, seems like the right place. [could
  also be merged.
- `Glob_term`: belongs to pretyping, where it is placed.
- `Locus`: ditto.
- `Pattern`: ditto.
- `Genredexpr`: depended by a few modules in `pretyping`, seems like
  the righ place.
- `Constrexpr`: used in `pretyping`, the use is a bit unfortunate and
  could be fixed, as this module should be declared in `interp` which
  is the one eliminating it.
- `Vernacexpr`: same problem than `Constrexpr`; this one can be fixed
  as it contains stuff it shouldn't. The right place should be `parsing`.
- `Extend`: Is placed in `pretyping` due to being used by `Vernacexpr`.
- `Notation_term`: First place used is `interp`, seems like the right place.

Additionally, for some files it could be worth to merge files of the
form `Foo` with `Foo_ops` in the medium term, as to create proper ADT
modules as done in the kernel with `Name`, etc...

1 files changed, 2 insertions, 2 deletions

diff --git a/Makefile.common b/Makefile.common
index 9a30e2a4c..eed41fbe7 100644
--- a/Makefile.common
+++ b/Makefile.common
@@ -75,7 +75,7 @@ INSTALLSH:=./install.sh
 MKDIR:=install -d
 
 CORESRCDIRS:=\
-  config 	clib 		lib		kernel	intf	kernel/byterun	library \
+  config 	clib 		lib		kernel		kernel/byterun	library \
   engine 	pretyping	interp	proofs	parsing 	printing \
   tactics 	vernac		stm		toplevel
 
@@ -102,7 +102,7 @@ BYTERUN:=$(addprefix kernel/byterun/, \
 # respecting this order is useful for developers that want to load or link
 # the libraries directly
 
-CORECMA:=clib/clib.cma lib/lib.cma kernel/kernel.cma intf/intf.cma library/library.cma \
+CORECMA:=clib/clib.cma lib/lib.cma kernel/kernel.cma library/library.cma \
         engine/engine.cma pretyping/pretyping.cma interp/interp.cma proofs/proofs.cma \
         parsing/parsing.cma printing/printing.cma tactics/tactics.cma vernac/vernac.cma \
 	stm/stm.cma toplevel/toplevel.cma