When trying to compile the test-program for the library, libmath is not in
the linker flags for some reason:

	./configure --host=arm-linux-gnu
	--with-lua-inc=/path/lua-5.1.4/included
	--with-lua-lib=/path/lua-5.1.4/lib

        configure: WARNING:
        *** Lua (>=5.0) headers and/or librairies couldn't be found in your system.
        *** Try to install liblua, liblualib and liblua-dev with your software

	configure:11664: gcc -o conftest -g -O2
	-I/path/lua-5.1.4/src
	-I/path/lua-5.1.4/src
	-L/path/lua-5.1.4/lib conftest.c
	-llua >&5

	In function `Arith':
	lvm.c:(.text+0x458): undefined reference to `pow'

Signed-off-by: Anders Palm <ap@swtech.dk>
Signed-off-by: Petr Štetiar <ynezz@true.cz>