Pulled interrupts into an optional module.

common/bits.h

@@ -37,3 +37,6 @@ typedef struct {
   void *DOCREATE_OP;
   const BUILTIN_WORD *builtins;
 } G_SYS;
+
+static G_SYS *g_sys = 0;
+static cell_t *forth_run(cell_t *init_rp);

common/core.h

@@ -43,8 +43,6 @@ enum {
 #undef V
 };
 
-static G_SYS *g_sys = 0;
-
 static cell_t convert(const char *pos, cell_t n, cell_t base, cell_t *ret) {
   *ret = 0;
   cell_t negate = 0;

common/forth_namespace_tests.fs

@@ -623,7 +623,6 @@ e: test-esp32-forth-voclist
   out: streams 
   out: tasks 
   out: rtos 
-  out: interrupts 
   out: sockets 
   out: Serial 
   out: ledc 
@@ -682,7 +681,6 @@ e: check-esp32-builtins
 
 e: check-esp32-bindings
   out: rtos 
-  out: interrupts 
   out: sockets 
   out: Serial 
   out: ledc 
@@ -699,7 +697,6 @@ e: test-esp32-forth-namespace
   ' forth list-from
   out: FORTH 
   out: telnetd 
-  out: timers 
   out: registers 
   out: webui 
   out: login