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, 52 insertions, 0 deletions

diff --git a/src/search.h b/src/search.h
new file mode 100644
index 0000000000..b24d2aa69a
--- /dev/null
+++ b/src/search.h
@@ -0,0 +1,52 @@
+#ifndef NEOVIM_SEARCH_H
+#define NEOVIM_SEARCH_H
+/* search.c */
+int search_regcomp __ARGS((char_u *pat, int pat_save, int pat_use, int options,
+                           regmmatch_T *regmatch));
+char_u *get_search_pat __ARGS((void));
+char_u *reverse_text __ARGS((char_u *s));
+void save_search_patterns __ARGS((void));
+void restore_search_patterns __ARGS((void));
+void free_search_patterns __ARGS((void));
+int ignorecase __ARGS((char_u *pat));
+int pat_has_uppercase __ARGS((char_u *pat));
+char_u *last_search_pat __ARGS((void));
+void reset_search_dir __ARGS((void));
+void set_last_search_pat __ARGS((char_u *s, int idx, int magic, int setlast));
+void last_pat_prog __ARGS((regmmatch_T *regmatch));
+int searchit __ARGS((win_T *win, buf_T *buf, pos_T *pos, int dir, char_u *pat,
+                     long count, int options, int pat_use, linenr_T stop_lnum,
+                     proftime_T *tm));
+void set_search_direction __ARGS((int cdir));
+int do_search __ARGS((oparg_T *oap, int dirc, char_u *pat, long count,
+                      int options,
+                      proftime_T *tm));
+int search_for_exact_line __ARGS((buf_T *buf, pos_T *pos, int dir, char_u *pat));
+int searchc __ARGS((cmdarg_T *cap, int t_cmd));
+pos_T *findmatch __ARGS((oparg_T *oap, int initc));
+pos_T *findmatchlimit __ARGS((oparg_T *oap, int initc, int flags, int maxtravel));
+void showmatch __ARGS((int c));
+int findsent __ARGS((int dir, long count));
+int findpar __ARGS((int *pincl, int dir, long count, int what, int both));
+int startPS __ARGS((linenr_T lnum, int para, int both));
+int fwd_word __ARGS((long count, int bigword, int eol));
+int bck_word __ARGS((long count, int bigword, int stop));
+int end_word __ARGS((long count, int bigword, int stop, int empty));
+int bckend_word __ARGS((long count, int bigword, int eol));
+int current_word __ARGS((oparg_T *oap, long count, int include, int bigword));
+int current_sent __ARGS((oparg_T *oap, long count, int include));
+int current_block __ARGS((oparg_T *oap, long count, int include, int what,
+                          int other));
+int current_tagblock __ARGS((oparg_T *oap, long count_arg, int include));
+int current_par __ARGS((oparg_T *oap, long count, int include, int type));
+int current_quote __ARGS((oparg_T *oap, long count, int include, int quotechar));
+int current_search __ARGS((long count, int forward));
+int linewhite __ARGS((linenr_T lnum));
+void find_pattern_in_path __ARGS((char_u *ptr, int dir, int len, int whole,
+                                  int skip_comments, int type, long count,
+                                  int action, linenr_T start_lnum,
+                                  linenr_T end_lnum));
+int read_viminfo_search_pattern __ARGS((vir_T *virp, int force));
+void write_viminfo_search_pattern __ARGS((FILE *fp));
+/* vim: set ft=c : */
+#endif /* NEOVIM_SEARCH_H */