Removes 'proto' dir

See #137 for the issue.

Every header in the proto directory was:

* Given include guards in the form

    #ifndef NEOVIM_FILENAME_H
    #define NEOVIM_FILENAME_H
        ...
    #endif /* NEOVIM_FILENAM_H */

* Renamed from *.pro -> *.h
* Moved from src/proto/ to src/

This would have caused conficts with some existing headers in src/;
rather than merge these conflicts now (which is a whole other can of
worms involving multiple and conditional inclusion), any header in src/
with a conflicting name was renamed from *.h -> *_defs.h (which may or
may not actually describe its purpose, the change is purely a
namespacing issue).

Once all of these changes were made a script was developed to determine
what #includes needed to be added to each source file to describe its
dependencies and allow it to compile; because the script is so short
and I'll just list it here:

    #! /bin/bash

    cd $(dirname $0)

    # Scrapes `make` output for provided error messages and outputs #includes
    # needed to resolve them.
    #   $1 : part of the clang error message between filename and identifier
    list_missing_includes() {
        for file_missing_pair in $(CC=clang make 2>&1 >/dev/null | sed -n "s/\/\(.*\.[hc]\).*$1.*'\(.*\)'.*/\1:\2/p"); do
            fields=(${file_missing_pair//:/ })
            source_file=${fields[0]}
            missing_func=${fields[1]}
            # Try to find the declaration of the missing function.
            echo $(basename $source_file) \
                \#include \"$(grep -r "\b$missing_func __ARGS" | sed -n "s/.*\/\(.*\)\:.*/\1/p")\"
        # Remove duplicates
        done | sort | uniq
    }

    echo "Finding missing function prototypes..."
    list_missing_includes "implicit declaration of function"
    echo "Finding missing identifier declarations..."
    list_missing_includes "use of undeclared identifier"

Each list of required headers was added by hand in the following format:

    #include "vim.h"
    #include "*_defs.h"
    #include "filename.h"
    /* All other includes in same module here, in alphabetical order. */
    /* All includes from other modules (e.g. "os/*.h") here in alphabetical
     * order. */

1 files changed, 85 insertions, 0 deletions

diff --git a/src/fileio.h b/src/fileio.h
new file mode 100644
index 0000000000..add97d37d6
--- /dev/null
+++ b/src/fileio.h
@@ -0,0 +1,85 @@
+#ifndef NEOVIM_FILEIO_H
+#define NEOVIM_FILEIO_H
+/* fileio.c */
+void filemess __ARGS((buf_T *buf, char_u *name, char_u *s, int attr));
+int readfile __ARGS((char_u *fname, char_u *sfname, linenr_T from,
+                     linenr_T lines_to_skip, linenr_T lines_to_read, exarg_T *
+                     eap,
+                     int flags));
+int prep_exarg __ARGS((exarg_T *eap, buf_T *buf));
+void set_file_options __ARGS((int set_options, exarg_T *eap));
+void set_forced_fenc __ARGS((exarg_T *eap));
+int prepare_crypt_read __ARGS((FILE *fp));
+char_u *prepare_crypt_write __ARGS((buf_T *buf, int *lenp));
+int check_file_readonly __ARGS((char_u *fname, int perm));
+int buf_write __ARGS((buf_T *buf, char_u *fname, char_u *sfname, linenr_T start,
+                      linenr_T end, exarg_T *eap, int append, int forceit,
+                      int reset_changed,
+                      int filtering));
+void msg_add_fname __ARGS((buf_T *buf, char_u *fname));
+void msg_add_lines __ARGS((int insert_space, long lnum, off_t nchars));
+char_u *shorten_fname1 __ARGS((char_u *full_path));
+char_u *shorten_fname __ARGS((char_u *full_path, char_u *dir_name));
+void shorten_fnames __ARGS((int force));
+void shorten_filenames __ARGS((char_u **fnames, int count));
+char_u *modname __ARGS((char_u *fname, char_u *ext, int prepend_dot));
+char_u *buf_modname __ARGS((int shortname, char_u *fname, char_u *ext,
+                            int prepend_dot));
+int vim_fgets __ARGS((char_u *buf, int size, FILE *fp));
+int tag_fgets __ARGS((char_u *buf, int size, FILE *fp));
+int vim_rename __ARGS((char_u *from, char_u *to));
+int check_timestamps __ARGS((int focus));
+int buf_check_timestamp __ARGS((buf_T *buf, int focus));
+void buf_reload __ARGS((buf_T *buf, int orig_mode));
+void buf_store_time __ARGS((buf_T *buf, struct stat *st, char_u *fname));
+void write_lnum_adjust __ARGS((linenr_T offset));
+void vim_deltempdir __ARGS((void));
+char_u *vim_tempname __ARGS((int extra_char));
+void forward_slash __ARGS((char_u *fname));
+void aubuflocal_remove __ARGS((buf_T *buf));
+int au_has_group __ARGS((char_u *name));
+void do_augroup __ARGS((char_u *arg, int del_group));
+void free_all_autocmds __ARGS((void));
+int check_ei __ARGS((void));
+char_u *au_event_disable __ARGS((char *what));
+void au_event_restore __ARGS((char_u *old_ei));
+void do_autocmd __ARGS((char_u *arg, int forceit));
+int do_doautocmd __ARGS((char_u *arg, int do_msg));
+void ex_doautoall __ARGS((exarg_T *eap));
+int check_nomodeline __ARGS((char_u **argp));
+void aucmd_prepbuf __ARGS((aco_save_T *aco, buf_T *buf));
+void aucmd_restbuf __ARGS((aco_save_T *aco));
+int apply_autocmds __ARGS((event_T event, char_u *fname, char_u *fname_io,
+                           int force,
+                           buf_T *buf));
+int apply_autocmds_retval __ARGS((event_T event, char_u *fname, char_u *
+                                  fname_io, int force, buf_T *buf,
+                                  int *retval));
+int has_cursorhold __ARGS((void));
+int trigger_cursorhold __ARGS((void));
+int has_cursormoved __ARGS((void));
+int has_cursormovedI __ARGS((void));
+int has_textchanged __ARGS((void));
+int has_textchangedI __ARGS((void));
+int has_insertcharpre __ARGS((void));
+void block_autocmds __ARGS((void));
+void unblock_autocmds __ARGS((void));
+int is_autocmd_blocked __ARGS((void));
+char_u *getnextac __ARGS((int c, void *cookie, int indent));
+int has_autocmd __ARGS((event_T event, char_u *sfname, buf_T *buf));
+char_u *get_augroup_name __ARGS((expand_T *xp, int idx));
+char_u *set_context_in_autocmd __ARGS((expand_T *xp, char_u *arg, int doautocmd));
+char_u *get_event_name __ARGS((expand_T *xp, int idx));
+int autocmd_supported __ARGS((char_u *name));
+int au_exists __ARGS((char_u *arg));
+int match_file_pat __ARGS((char_u *pattern, regprog_T *prog, char_u *fname,
+                           char_u *sfname, char_u *tail,
+                           int allow_dirs));
+int match_file_list __ARGS((char_u *list, char_u *sfname, char_u *ffname));
+char_u *file_pat_to_reg_pat __ARGS((char_u *pat, char_u *pat_end,
+                                    char *allow_dirs,
+                                    int no_bslash));
+long read_eintr __ARGS((int fd, void *buf, size_t bufsize));
+long write_eintr __ARGS((int fd, void *buf, size_t bufsize));
+/* vim: set ft=c : */
+#endif /* NEOVIM_FILEIO_H */