Remove saving and restoring of zeropage variables.

Merge remote-tracking branch 'upstream/master'

Conflicts:
	cfg/atarixl.cfg
	libsrc/atari/crt0.s

libsrc/atari/shadow_ram_prepare.s

@@ -19,7 +19,6 @@ DEBUG   =       1
         .import         __SHADOW_RAM_RUN__
         .import         __CHARGEN_START__, __CHARGEN_SIZE__
         .import         __SAVEAREA_LOAD__
-        .import         zpsave
 
         .include        "zeropage.inc"
         .include        "atari.inc"
@@ -154,14 +153,6 @@ scrok:  ; now close it again -- we don't need it anymore
         jsr     CIOV_org
 
 
-; Save the zero page locations we need
-
-        ldx     #zpspace-1
-L1:     lda     sp,x
-        sta     zpsave,x
-        dex
-        bpl     L1
-
 ; copy chargen to low memory
 
 .ifdef DEBUG