Enable maintainer mode from autogen.sh. Fix vesa build to create library

    before program. Remove bogus AC_SUBST lines for XSERVER_CFLAGS and
    XSERVER_LIBS

hw/kdrive/vesa/Makefile.am

@@ -9,10 +9,10 @@ INCLUDES = 					\
 	-I$(top_srcdir)/render			\
 	$(XSERVER_CFLAGS)
 
-bin_PROGRAMS = Xvesa
-
 noinst_LIBRARIES = libvesa.a
 
+bin_PROGRAMS = Xvesa
+
 libvesa_a_SOURCES = \
 	vesa.c		\
 	vbe.c		\