Initial support for gambit-scheme v4.7.0

ports/gambc/nacl.patch

Index: ports/gambc/nacl.patch
diff --git a/ports/gambc/nacl.patch b/ports/gambc/nacl.patch
new file mode 100644
index 0000000000000000000000000000000000000000..28eb3d4f8aad1f47f7129bdfe9c1fa50869ae543
--- /dev/null
+++ b/ports/gambc/nacl.patch
@@ -0,0 +1,42 @@
+diff --git a/lib/os.c b/lib/os.c
+index 24991b2..7102dda 100644
+--- a/lib/os.c
++++ b/lib/os.c
+@@ -378,8 +378,8 @@ ___SIZE_TS *majflt;)
+ 
+   if (getrusage (RUSAGE_SELF, &ru) == 0)
+     {
+-      *minflt = ru.ru_minflt;
+-      *majflt = ru.ru_majflt;
++      *minflt = 0; // ru.ru_minflt;
++      *majflt = 0; // ru.ru_majflt;
+     }
+   else
+     {
+diff --git a/lib/os_tty.c b/lib/os_tty.c
+index 69c7784..2386f76 100644
+--- a/lib/os_tty.c
++++ b/lib/os_tty.c
+@@ -7157,7 +7157,7 @@ ___HIDDEN ___SCMOBJ lineeditor_process_events
+         (self)
+ ___device_tty *self;)
+ {
+-#define AGGREGATION_BUFFER_SIZE (80*50)
++#define AGGREGATION_BUFFER_SIZE 1
+ 
+   ___device_tty *d = self;
+   ___SCMOBJ e1;
+diff --git a/include/gambit.h.in b/include/gambit.h.in
+index 4c44a1e..99aefb9 100644
+--- a/include/gambit.h.in
++++ b/include/gambit.h.in
+@@ -1304,7 +1304,7 @@
+
+ #include <setjmp.h>
+
+-#ifdef setjmp
++#if defined(setjmp) || (defined(__native_client__) && defined(__clang__))
+ #undef ___CAN_IMPORT_SETJMP_DYNAMICALLY
+ #define ___CAN_IMPORT_SETJMP_DYNAMICALLY
+ #endif
+