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/term.h

@@ -0,0 +1,63 @@
+#ifndef NEOVIM_TERM_H
+#define NEOVIM_TERM_H
+/* term.c */
+int set_termname(char_u *term);
+void set_mouse_termcode(int n, char_u *s);
+void del_mouse_termcode(int n);
+void getlinecol(long *cp, long *rp);
+int add_termcap_entry(char_u *name, int force);
+int term_is_8bit(char_u *name);
+char_u *tltoa(unsigned long i);
+void termcapinit(char_u *name);
+void out_flush(void);
+void out_flush_check(void);
+void out_char(unsigned c);
+void out_str_nf(char_u *s);
+void out_str(char_u *s);
+void term_windgoto(int row, int col);
+void term_cursor_right(int i);
+void term_append_lines(int line_count);
+void term_delete_lines(int line_count);
+void term_set_winpos(int x, int y);
+void term_set_winsize(int width, int height);
+void term_fg_color(int n);
+void term_bg_color(int n);
+void term_settitle(char_u *title);
+void ttest(int pairs);
+void check_shellsize(void);
+void limit_screen_size(void);
+void win_new_shellsize(void);
+void shell_resized(void);
+void shell_resized_check(void);
+void set_shellsize(int width, int height, int mustset);
+void settmode(int tmode);
+void starttermcap(void);
+void stoptermcap(void);
+void may_req_termresponse(void);
+void may_req_ambiguous_char_width(void);
+int swapping_screen(void);
+void setmouse(void);
+int mouse_has(int c);
+int mouse_model_popup(void);
+void scroll_start(void);
+void cursor_on(void);
+void cursor_off(void);
+void term_cursor_shape(void);
+void scroll_region_set(win_T *wp, int off);
+void scroll_region_reset(void);
+void clear_termcodes(void);
+void add_termcode(char_u *name, char_u *string, int flags);
+char_u *find_termcode(char_u *name);
+char_u *get_termcode(int i);
+void del_termcode(char_u *name);
+void set_mouse_topline(win_T *wp);
+int check_termcode(int max_offset, char_u *buf, int bufsize,
+                           int *buflen);
+char_u *replace_termcodes(char_u *from, char_u **bufp, int from_part,
+                                  int do_lt,
+                                  int special);
+int find_term_bykeys(char_u *src);
+void show_termcodes(void);
+int show_one_termcode(char_u *name, char_u *code, int printit);
+char_u *translate_mapping(char_u *str, int expmap);
+#endif /* NEOVIM_TERM_H */