wined3d: Rename state.c to ffp_gl.c.

Better reflect its contents.

There is still a small amount of code in this file not directly related to the
FFP:

 - compile_state_table(), which should eventually go away;

 - states like state_so() and indexbuffer(), which should eventually be moved to
   context_gl.c with the rest of the resource loading/binding code.

dlls/wined3d/Makefile.in

@@ -15,6 +15,7 @@ SOURCES = \
 	cs.c \
 	device.c \
 	directx.c \
+	ffp_gl.c \
 	gl_compat.c \
 	glsl_shader.c \
 	nvidia_texture_shader.c \
@@ -26,7 +27,6 @@ SOURCES = \
 	shader_sm1.c \
 	shader_sm4.c \
 	shader_spirv.c \
-	state.c \
 	stateblock.c \
 	surface.c \
 	swapchain.c \

dlls/wined3d/ffp_gl.c

@@ -1,5 +1,5 @@
 /*
- * Direct3D state management
+ * GL fixed-function pipeline
  *
  * Copyright 2002 Lionel Ulmer
  * Copyright 2002-2005 Jason Edmeades