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, 72 insertions, 0 deletions

diff --git a/src/if_cscope_defs.h b/src/if_cscope_defs.h
new file mode 100644
index 0000000000..3ed89715fc
--- /dev/null
+++ b/src/if_cscope_defs.h
@@ -0,0 +1,72 @@
+/* vi:set ts=8 sts=4 sw=4:
+ *
+ * CSCOPE support for Vim added by Andy Kahn <kahn@zk3.dec.com>
+ * Ported to Win32 by Sergey Khorev <sergey.khorev@gmail.com>
+ *
+ * The basic idea/structure of cscope for Vim was borrowed from Nvi.
+ * There might be a few lines of code that look similar to what Nvi
+ * has.  If this is a problem and requires inclusion of the annoying
+ * BSD license, then sue me; I'm not worth much anyway.
+ */
+
+
+#if defined(UNIX)
+# include <sys/types.h>         /* pid_t */
+# include <sys/stat.h>          /* dev_t, ino_t */
+#else
+#endif
+
+#define CSCOPE_SUCCESS          0
+#define CSCOPE_FAILURE          -1
+
+#define CSCOPE_DBFILE           "cscope.out"
+#define CSCOPE_PROMPT           ">> "
+
+/*
+ * s 0name	Find this C symbol
+ * g 1name	Find this definition
+ * d 2name	Find functions called by this function
+ * c 3name	Find functions calling this function
+ * t 4string	find text string (cscope 12.9)
+ * t 4name	Find assignments to (cscope 13.3)
+ *   5pattern	change pattern -- NOT USED
+ * e 6pattern	Find this egrep pattern
+ * f 7name	Find this file
+ * i 8name	Find files #including this file
+ */
+
+typedef struct {
+  char *  name;
+  int (*func)__ARGS((exarg_T *eap));
+  char *  help;
+  char *  usage;
+  int cansplit;                 /* if supports splitting window */
+} cscmd_T;
+
+typedef struct csi {
+  char *          fname;        /* cscope db name */
+  char *          ppath;        /* path to prepend (the -P option) */
+  char *          flags;        /* additional cscope flags/options (e.g, -p2) */
+#if defined(UNIX)
+  pid_t pid;                    /* PID of the connected cscope process. */
+  dev_t st_dev;                 /* ID of dev containing cscope db */
+  ino_t st_ino;                 /* inode number of cscope db */
+#else
+#endif
+
+  FILE *          fr_fp;        /* from cscope: FILE. */
+  FILE *          to_fp;        /* to cscope: FILE. */
+} csinfo_T;
+
+typedef enum { Add, Find, Help, Kill, Reset, Show } csid_e;
+
+typedef enum {
+  Store,
+  Get,
+  Free,
+  Print
+} mcmd_e;
+
+
+
+/* the end */