libatari800 compilation errors on macOS

[greggjaskiewicz]

libatari800/atari800_antic.c:3055:7: error: call to undeclared function 'CPU_DLI'; ISO C99 and later do not support implicit function declarations [-Wimplicit-function-declaration]
CPU_DLI();
^
libatari800/atari800_antic.c:3055:7: note: did you mean 'CPU_NMI'?
libatari800/atari800/src/cpu.h:24:6: note: 'CPU_NMI' declared here
void CPU_NMI(void);
^
libatari800/atari800_antic.c:3070:6: error: call to undeclared function 'CPU_DLI'; ISO C99 and later do not support implicit function declarations [-Wimplicit-function-declaration]
CPU_DLI();
^
libatari800/atari800_antic.c:3218:3: error: call to undeclared function 'CPU_VBI'; ISO C99 and later do not support implicit function declarations [-Wimplicit-function-declaration]
CPU_VBI();
^
libatari800/atari800_antic.c:3218:3: note: did you mean 'CPU_NMI'?
libatari800/atari800/src/cpu.h:24:6: note: 'CPU_NMI' declared here
void CPU_NMI(void);
^
3 errors generated.
error: command '/usr/bin/clang' failed with exit code 1

[greggjaskiewicz]

The fix I implemented myself, but not recommend:

`diff --git a/lib6502/6502-emu b/lib6502/6502-emu
--- a/lib6502/6502-emu
+++ b/lib6502/6502-emu
@@ -1 +1 @@
-Subproject commit f702277d34635195948956982e8847932c334c1a
+Subproject commit f702277d34635195948956982e8847932c334c1a-dirty
diff --git a/libatari800/atari800_antic.c b/libatari800/atari800_antic.c
index 78d3bf8e..fa69ca41 100644
--- a/libatari800/atari800_antic.c
+++ b/libatari800/atari800_antic.c
@@ -48,6 +48,9 @@
#include "cycle_map.h"
#endif

+void CPU_DLI();
+void CPU_VBI();
+
#include "libudis.h"
#include "libdebugger.h"
extern frame_status_t *LIBATARI800_Status;`