vlc_1.1.4.1: add `lua5.1` to `DEPENDS`

vlc_1.1.4.1: add `lua5.1` to `DEPENDS`

After VLC 1.0.6, being the latest version in OE until addition of 1.1.4.1 in commit 30e362 [2], some interfaces were implemented in Lua in VLC 1.1.0 [1].

	Interfaces:
	 * Renamed the legacy rc, telnet and http interfaces to oldrc, oldtelnet and oldhttp.
	 * rc, telnet and http are now implemented using the lua interface system.

Task `configure` fails with the following error message.

	[…]
	| checking for LUA... no
	| configure: WARNING: lua5.1 not found, trying lua >= 5.1 instead
	| checking for LUA... no
	| checking lua.h usability... no
	| checking lua.h presence... no
	| checking for lua.h... no
	| checking lauxlib.h usability... no
	| checking lauxlib.h presence... no
	| checking for lauxlib.h... no
	| checking lualib.h usability... no
	| checking lualib.h presence... no
	| checking for lualib.h... no
	| checking for luaL_newstate in -llua5.1 ... no
	| checking for luaL_newstate in -llua51 ... no
	| checking for luaL_newstate in -llua ... no
	| configure: error: Could not find lua. Lua is needed for some interfaces (rc, telnet, http) as well as many other custom scripts. Use --disable-lua to ignore this error.
	| ERROR: Function do_configure failed
	NOTE: package vlc-1.1.4.1-r0: task do_configure: Failed
	[…]

Adding `lua5.1` to `DEPENDS` is chosen in favor of disabling it.

[1] http://git.videolan.org/?p=vlc.git;a=commitdiff;h=3c1df96cda8086f605f2eacaa5653c9e43ec45ac
[2] http://cgit.openembedded.org/cgit.cgi/openembedded/commit/?id=30e362c22a49521ebeef9bed1f0c58902b7dc50b

Signed-off-by: Paul Menzel <paulepanter@users.sourceforge.net>
Signed-off-by: Koen Kooi <koen@openembedded.org>