Introduce nvim namespace: Move files.

Move files from src/ to src/nvim/.
- src/nvim/ becomes the new root dir for nvim executable sources.
- src/libnvim/ is planned to become root dir of the neovim library.

src/nvim/ex_getln.h

@@ -0,0 +1,66 @@
+#ifndef NEOVIM_EX_GETLN_H
+#define NEOVIM_EX_GETLN_H
+/* ex_getln.c */
+char_u *getcmdline(int firstc, long count, int indent);
+char_u *getcmdline_prompt(int firstc, char_u *prompt, int attr,
+                          int xp_context,
+                          char_u *xp_arg);
+int text_locked(void);
+void text_locked_msg(void);
+int curbuf_locked(void);
+int allbuf_locked(void);
+char_u *getexline(int c, void *cookie, int indent);
+char_u *getexmodeline(int promptc, void *cookie, int indent);
+void free_cmdline_buf(void);
+void putcmdline(int c, int shift);
+void unputcmdline(void);
+int put_on_cmdline(char_u *str, int len, int redraw);
+char_u *save_cmdline_alloc(void);
+void restore_cmdline_alloc(char_u *p);
+void cmdline_paste_str(char_u *s, int literally);
+void redrawcmdline(void);
+void redrawcmd(void);
+void compute_cmdrow(void);
+void gotocmdline(int clr);
+char_u *ExpandOne(expand_T *xp, char_u *str, char_u *orig, int options,
+                  int mode);
+void ExpandInit(expand_T *xp);
+void ExpandCleanup(expand_T *xp);
+void ExpandEscape(expand_T *xp, char_u *str, int numfiles, char_u *
+                  *files,
+                  int options);
+char_u *vim_strsave_fnameescape(char_u *fname, int shell);
+void tilde_replace(char_u *orig_pat, int num_files, char_u **files);
+char_u *sm_gettail(char_u *s);
+char_u *addstar(char_u *fname, int len, int context);
+void set_cmd_context(expand_T *xp, char_u *str, int len, int col);
+int expand_cmdline(expand_T *xp, char_u *str, int col, int *matchcount,
+                   char_u ***matches);
+int ExpandGeneric(expand_T *xp, regmatch_T *regmatch, int *num_file,
+                  char_u ***file, char_u *((*func)(expand_T *, int)),
+                  int escaped);
+char_u *globpath(char_u *path, char_u *file, int expand_options);
+void init_history(void);
+int get_histtype(char_u *name);
+void add_to_history(int histype, char_u *new_entry, int in_map, int sep);
+int get_history_idx(int histype);
+char_u *get_cmdline_str(void);
+int get_cmdline_pos(void);
+int set_cmdline_pos(int pos);
+int get_cmdline_type(void);
+char_u *get_history_entry(int histype, int idx);
+int clr_history(int histype);
+int del_history_entry(int histype, char_u *str);
+int del_history_idx(int histype, int idx);
+void remove_key_from_history(void);
+int get_list_range(char_u **str, int *num1, int *num2);
+void ex_history(exarg_T *eap);
+void prepare_viminfo_history(int asklen, int writing);
+int read_viminfo_history(vir_T *virp, int writing);
+void finish_viminfo_history(void);
+void write_viminfo_history(FILE *fp, int merge);
+void cmd_pchar(int c, int offset);
+int cmd_gchar(int offset);
+char_u *script_get(exarg_T *eap, char_u *cmd);
+
+#endif /* NEOVIM_EX_GETLN_H */