Fix flags for DB open.

branches: 1.3.6;
Correct mistakes in the sqlite.lua example

Changes:
- The open flag: sqlite.OPEN_CREATE will open the DB for reading and
writing, adding sqlite.OPEN_READWRITE to sqlite.OPEN_CREATE will cause
the DB to not be created and prevent the script from continuing
- When using stmt:bind_parameter_index() the parameter needs to be
prefixed with ':' if that was used in the prepared statement,
otherwise the incorrect index of 0 is returned.
- The drop table statement has an "x" appended to the table name, looks
like a typo.

Patch by Travis Paul

Closes PR misc/50493

lua: updated from 5.1 to 5.3 work3

* lua(1):
- changed lua_Integer to intmax_t
- updated distrib/sets/lists and etc/mtree
- updated bsd.lua.mk
- fixed bozohttpd (lua-bozo.c)
- compatibilized bindings: gpio, sqlite
* lua(4):
- removed floating-point and libc dependencies using '#ifndef _KERNEL'
- fixed division by zero and exponentiation
- libkern: added isalnum(), iscntrl(), isgraph(), isprint() and ispunct()
- acpica: removed isprint() from acnetbsd.h
- libc: moved strcspn.c, strpbrk.c and strspn.c to common
- removed stub headers
- compatibilized bindings: luapmf, luasystm
* reorganized luaconf.h
* updated doc/CHANGES and doc/RESPONSIBLE

branches: 1.1.8; 1.1.18;
Example files showing Lua module usage.