--without-drm stopped working with 2.8

[dgilman]

If you ./configure --without-drm in 2.8.x you will still get a libfaad_drm.2 shared object. The config.h is properly created with DRM undefied, there is something that is putting -DDRM into the CFLAGS in the makefile and that is forcing DRM to be defined at compile time.

[fabiangreffrath]

It doesn't build either one variant or the other anymore, but always builds both at once. I cannot see what's wrong with this.

[neheb]

This is the problem: 881b5e2

I will submit a patch partially fixing this.

[fabiangreffrath]

74e949f