qemu: add some extra ldflags to make it link succesfully
qemu-native was failing to link on my 64bit Fedora 13 machine with this error:
| /usr/bin/ld: libqemu.a(helper_opengl.o): undefined reference to symbol 'dlsym@@GLIBC_2.2.5'
| /usr/bin/ld: note: 'dlsym@@GLIBC_2.2.5' is defined in DSO /lib64/libdl.so.2 so try adding it to the linker command line
| /lib64/libdl.so.2: could not read symbols: Invalid operation
So I did as the linker told me and added -ldl to the linker flags
