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, 67 insertions, 0 deletions

diff --git a/src/charset.h b/src/charset.h
new file mode 100644
index 0000000000..d680522880
--- /dev/null
+++ b/src/charset.h
@@ -0,0 +1,67 @@
+#ifndef NEOVIM_CHARSET_H
+#define NEOVIM_CHARSET_H
+/* charset.c */
+int init_chartab __ARGS((void));
+int buf_init_chartab __ARGS((buf_T *buf, int global));
+void trans_characters __ARGS((char_u *buf, int bufsize));
+char_u *transstr __ARGS((char_u *s));
+char_u *str_foldcase __ARGS((char_u *str, int orglen, char_u *buf, int buflen));
+char_u *transchar __ARGS((int c));
+char_u *transchar_byte __ARGS((int c));
+void transchar_nonprint __ARGS((char_u *buf, int c));
+void transchar_hex __ARGS((char_u *buf, int c));
+int byte2cells __ARGS((int b));
+int char2cells __ARGS((int c));
+int ptr2cells __ARGS((char_u *p));
+int vim_strsize __ARGS((char_u *s));
+int vim_strnsize __ARGS((char_u *s, int len));
+int chartabsize __ARGS((char_u *p, colnr_T col));
+int linetabsize __ARGS((char_u *s));
+int linetabsize_col __ARGS((int startcol, char_u *s));
+int win_linetabsize __ARGS((win_T *wp, char_u *p, colnr_T len));
+int vim_isIDc __ARGS((int c));
+int vim_iswordc __ARGS((int c));
+int vim_iswordc_buf __ARGS((int c, buf_T *buf));
+int vim_iswordp __ARGS((char_u *p));
+int vim_iswordp_buf __ARGS((char_u *p, buf_T *buf));
+int vim_isfilec __ARGS((int c));
+int vim_isfilec_or_wc __ARGS((int c));
+int vim_isprintc __ARGS((int c));
+int vim_isprintc_strict __ARGS((int c));
+int lbr_chartabsize __ARGS((unsigned char *s, colnr_T col));
+int lbr_chartabsize_adv __ARGS((char_u **s, colnr_T col));
+int win_lbr_chartabsize __ARGS((win_T *wp, char_u *s, colnr_T col, int *headp));
+int in_win_border __ARGS((win_T *wp, colnr_T vcol));
+void getvcol __ARGS((win_T *wp, pos_T *pos, colnr_T *start, colnr_T *cursor,
+                     colnr_T *end));
+colnr_T getvcol_nolist __ARGS((pos_T *posp));
+void getvvcol __ARGS((win_T *wp, pos_T *pos, colnr_T *start, colnr_T *cursor,
+                      colnr_T *end));
+void getvcols __ARGS((win_T *wp, pos_T *pos1, pos_T *pos2, colnr_T *left,
+                      colnr_T *right));
+char_u *skipwhite __ARGS((char_u *q));
+char_u *skipdigits __ARGS((char_u *q));
+char_u *skiphex __ARGS((char_u *q));
+char_u *skiptodigit __ARGS((char_u *q));
+char_u *skiptohex __ARGS((char_u *q));
+int vim_isdigit __ARGS((int c));
+int vim_isxdigit __ARGS((int c));
+int vim_islower __ARGS((int c));
+int vim_isupper __ARGS((int c));
+int vim_toupper __ARGS((int c));
+int vim_tolower __ARGS((int c));
+char_u *skiptowhite __ARGS((char_u *p));
+char_u *skiptowhite_esc __ARGS((char_u *p));
+long getdigits __ARGS((char_u **pp));
+int vim_isblankline __ARGS((char_u *lbuf));
+void vim_str2nr __ARGS((char_u *start, int *hexp, int *len, int dooct,
+                        int dohex, long *nptr,
+                        unsigned long *unptr));
+int hex2nr __ARGS((int c));
+int hexhex2nr __ARGS((char_u *p));
+int rem_backslash __ARGS((char_u *str));
+void backslash_halve __ARGS((char_u *p));
+char_u *backslash_halve_save __ARGS((char_u *p));
+void ebcdic2ascii __ARGS((char_u *buffer, int len));
+/* vim: set ft=c : */
+#endif /* NEOVIM_CHARSET_H */