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, 30 insertions, 0 deletions

diff --git a/src/main.h b/src/main.h
new file mode 100644
index 0000000000..1e407ae154
--- /dev/null
+++ b/src/main.h
@@ -0,0 +1,30 @@
+#ifndef NEOVIM_MAIN_H
+#define NEOVIM_MAIN_H
+/* main.c */
+void main_loop __ARGS((int cmdwin, int noexmode));
+void getout_preserve_modified __ARGS((int exitval));
+void getout __ARGS((int exitval));
+int process_env __ARGS((char_u *env, int is_viminit));
+void mainerr_arg_missing __ARGS((char_u *str));
+void time_push __ARGS((void *tv_rel, void *tv_start));
+void time_pop __ARGS((void *tp));
+void time_msg __ARGS((char *mesg, void *tv_start));
+void server_to_input_buf __ARGS((char_u *str));
+char_u *eval_client_expr_to_string __ARGS((char_u *expr));
+char_u *serverConvert __ARGS((char_u *client_enc, char_u *data, char_u **tofree));
+int toF_TyA __ARGS((int c));
+int fkmap __ARGS((int c));
+void conv_to_pvim __ARGS((void));
+void conv_to_pstd __ARGS((void));
+char_u *lrswap __ARGS((char_u *ibuf));
+char_u *lrFswap __ARGS((char_u *cmdbuf, int len));
+char_u *lrF_sub __ARGS((char_u *ibuf));
+int cmdl_fkmap __ARGS((int c));
+int F_isalpha __ARGS((int c));
+int F_isdigit __ARGS((int c));
+int F_ischar __ARGS((int c));
+void farsi_fkey __ARGS((cmdarg_T *cap));
+int arabic_shape __ARGS((int c, int *ccp, int *c1p, int prev_c, int prev_c1,
+                         int next_c));
+/* vim: set ft=c : */
+#endif /* NEOVIM_MAIN_H */