Add automatic generation of headers

- The 'stripdecls.py' script replaces declarations in all headers by includes to
  generated headers.
  `ag '#\s*if(?!ndef NEOVIM_).*((?!#\s*endif).*\n)*#ifdef INCLUDE_GENERATED'`
  was used for this.
- Add and integrate gendeclarations.lua into the build system to generate the
  required includes.
- Add -Wno-unused-function
- Made a bunch of old-style definitions ANSI

This adds a requirement: all type and structure definitions must be present
before INCLUDE_GENERATED_DECLARATIONS-protected include.

Warning: mch_expandpath (path.h.generated.h) was moved manually. So far it is
the only exception.

1 files changed, 4 insertions, 19 deletions

diff --git a/src/nvim/memfile.h b/src/nvim/memfile.h
index 5f21bdaf4f..94722171d7 100644
--- a/src/nvim/memfile.h
+++ b/src/nvim/memfile.h
@@ -4,22 +4,7 @@
 #include "nvim/buffer_defs.h"
 #include "nvim/memfile_defs.h"
 
-/* memfile.c */
-memfile_T *mf_open(char_u *fname, int flags);
-int mf_open_file(memfile_T *mfp, char_u *fname);
-void mf_close(memfile_T *mfp, int del_file);
-void mf_close_file(buf_T *buf, int getlines);
-void mf_new_page_size(memfile_T *mfp, unsigned new_size);
-bhdr_T *mf_new(memfile_T *mfp, int negative, int page_count);
-bhdr_T *mf_get(memfile_T *mfp, blocknr_T nr, int page_count);
-void mf_put(memfile_T *mfp, bhdr_T *hp, int dirty, int infile);
-void mf_free(memfile_T *mfp, bhdr_T *hp);
-int mf_sync(memfile_T *mfp, int flags);
-void mf_set_dirty(memfile_T *mfp);
-int mf_release_all(void);
-blocknr_T mf_trans_del(memfile_T *mfp, blocknr_T old_nr);
-void mf_set_ffname(memfile_T *mfp);
-void mf_fullname(memfile_T *mfp);
-int mf_need_trans(memfile_T *mfp);
-
-#endif /* NVIM_MEMFILE_H */
+#ifdef INCLUDE_GENERATED_DECLARATIONS
+# include "memfile.h.generated.h"
+#endif
+#endif  // NVIM_MEMFILE_H