Fix over-long lines with minor re-wordings

Changes

@@ -377,7 +377,7 @@ OCaml 4.07
 ### Tools:
 
 - MPR#7643, GPR#1377: ocamldep, fix an exponential blowup in presence of nested
-  structures and signatures (e.g. "include struct … include(struct … end) … end")
+  structures and signatures, e.g. "include struct … include(struct … end) … end"
   (Florian Angeletti, review by Gabriel Scherer, report by Christophe Raffalli)
 
 - MPR#7687, GPR#1653: deprecate -thread option,
@@ -2133,7 +2133,8 @@ OCaml 4.04.1 (14 Apr 2017):
   (David Allsopp, report and initial fix by Nicolás Ojeda Bär, review and
    superior implementation suggestion by Xavier Leroy)
 
-- PR#7405, GPR#903: s390x: Fix address of caml_raise_exn in native dynlink modules
+- PR#7405, GPR#903: s390x: Fix address of caml_raise_exn in native dynlink
+  modules.
   (Richard Jones, review by Xavier Leroy)
 
 - PR#7417, GPR#930: ensure 16 byte stack alignment inside caml_allocN on x86-64
@@ -2144,7 +2145,8 @@ OCaml 4.04.1 (14 Apr 2017):
   of similar debugging information location entries
   (Mark Shinwell)
 
-- PR#7457: a case of double free in the systhreads library (POSIX implementation)
+- PR#7457: a case of double free in the systhreads library (POSIX
+  implementation).
   (Xavier Leroy, report by Chet Murthy)
 
 - PR#7460, GPR#1011: catch uncaught exception when unknown files are passed

otherlibs/unix/getgr.c

@@ -29,7 +29,8 @@ static value alloc_group_entry(struct group *entry)
 
   Begin_roots3 (name, pass, mem);
     name = caml_copy_string(entry->gr_name);
-    /* on some platforms, namely Android, gr_passwd can be NULL - hence this workaround */
+    /* on some platforms, namely Android, gr_passwd can be NULL,
+       hence this workaround */
     pass = caml_copy_string(entry->gr_passwd ? entry->gr_passwd : "");
     mem = caml_copy_string_array((const char**)entry->gr_mem);
     res = caml_alloc_small(4, 0);

stdlib/list.ml

@@ -69,7 +69,8 @@ let rec init_aux i n f =
 let rev_init_threshold =
   match Sys.backend_type with
   | Sys.Native | Sys.Bytecode -> 10_000
-  (* We don't known the size of the stack, better be safe and assume it's small. *)
+  (* We don't know the size of the stack, better be safe and assume it's
+     small. *)
   | Sys.Other _ -> 50
 
 let init len f =