Remove garbage collector macro from header (#114)

We can put this back the moment someone requests it. Pain-free garbage
collection for the C language is pretty cool. All it does is overwrite
the return address with a trampoline that calls free(). It's not clear
what it should be named if it's made a public API.

test/libc/calls/commandv_test.c

@@ -24,7 +24,7 @@
 #include "libc/fmt/fmt.h"
 #include "libc/log/check.h"
 #include "libc/mem/mem.h"
-#include "libc/runtime/gc.h"
+#include "libc/runtime/gc.internal.h"
 #include "libc/runtime/internal.h"
 #include "libc/runtime/runtime.h"
 #include "libc/stdio/stdio.h"

test/libc/calls/ftruncate_test.c

@@ -20,7 +20,7 @@
 #include "libc/calls/struct/stat.h"
 #include "libc/dce.h"
 #include "libc/errno.h"
-#include "libc/runtime/gc.h"
+#include "libc/runtime/gc.internal.h"
 #include "libc/runtime/runtime.h"
 #include "libc/stdio/stdio.h"
 #include "libc/testlib/testlib.h"

test/libc/calls/getcwd_test.c

@@ -22,7 +22,7 @@
 #include "libc/fmt/fmt.h"
 #include "libc/log/check.h"
 #include "libc/macros.internal.h"
-#include "libc/runtime/gc.h"
+#include "libc/runtime/gc.internal.h"
 #include "libc/testlib/testlib.h"
 #include "libc/x/x.h"
 

test/libc/calls/mkntcmdline_test.c

@@ -19,7 +19,7 @@
 #include "libc/calls/ntspawn.h"
 #include "libc/errno.h"
 #include "libc/mem/mem.h"
-#include "libc/runtime/gc.h"
+#include "libc/runtime/gc.internal.h"
 #include "libc/str/str.h"
 #include "libc/testlib/testlib.h"
 

test/libc/calls/mkntenvblock_test.c

@@ -17,7 +17,7 @@
 │ PERFORMANCE OF THIS SOFTWARE.                                                │
 ╚─────────────────────────────────────────────────────────────────────────────*/
 #include "libc/calls/ntspawn.h"
-#include "libc/runtime/gc.h"
+#include "libc/runtime/gc.internal.h"
 #include "libc/testlib/testlib.h"
 
 char16_t envvars[ARG_MAX];

test/libc/calls/mkntpath_test.c

@@ -17,7 +17,7 @@
 │ PERFORMANCE OF THIS SOFTWARE.                                                │
 ╚─────────────────────────────────────────────────────────────────────────────*/
 #include "libc/calls/internal.h"
-#include "libc/runtime/gc.h"
+#include "libc/runtime/gc.internal.h"
 #include "libc/testlib/testlib.h"
 
 char16_t p[PATH_MAX];

test/libc/calls/stat_test.c

@@ -19,7 +19,7 @@
 #include "libc/calls/calls.h"
 #include "libc/calls/struct/stat.h"
 #include "libc/nt/files.h"
-#include "libc/runtime/gc.h"
+#include "libc/runtime/gc.internal.h"
 #include "libc/runtime/runtime.h"
 #include "libc/testlib/testlib.h"
 #include "libc/x/x.h"