Win32: fixed some warnings reported by Borland C. Most notably, warning W8012 (comparing signed and unsigned values) reported in multiple places where an unsigned value of small type (e.g., u_short) is promoted to an int and compared to an unsigned value. Warning W8072 (suspicious pointer arithmetic) disabled, it is reported when we increment base pointer in ngx_shm_alloc().

au BufRead,BufNewFile *.nginx set ft=nginx
au BufRead,BufNewFile */etc/nginx/* set ft=nginx
au BufRead,BufNewFile */usr/local/nginx/conf/* set ft=nginx
au BufRead,BufNewFile nginx.conf set ft=nginx