Make more fixes and improvements

- Fix Makefile flaking due to ZIPOBJ_FLAGS generation
- Make printf() floating point and gdtoa thread safe
- Polish up the runit / runitd programs some more
- Prune some more makefile dependencies

libc/testlib/ezbenchreport.c

@@ -18,7 +18,6 @@
 ╚─────────────────────────────────────────────────────────────────────────────*/
 #include "libc/fmt/fmt.h"
 #include "libc/math.h"
-#include "libc/runtime/gc.internal.h"
 #include "libc/runtime/runtime.h"
 #include "libc/stdio/stdio.h"
 #include "libc/testlib/testlib.h"

libc/testlib/globals.c

@@ -19,5 +19,5 @@
 #include "libc/testlib/testlib.h"
 
 char g_fixturename[256];
-unsigned g_testlib_ran;
-unsigned g_testlib_failed;
+_Atomic(unsigned) g_testlib_ran;
+_Atomic(unsigned) g_testlib_failed;

libc/testlib/testlib.h

@@ -2,7 +2,6 @@
 #define COSMOPOLITAN_LIBC_TESTLIB_H_
 #include "libc/bits/weaken.h"
 #include "libc/errno.h"
-#include "libc/runtime/gc.internal.h"
 #include "libc/str/str.h"
 #include "libc/testlib/ugly.h"
 #if !(__ASSEMBLER__ + __LINKER__ + 0)
@@ -318,8 +317,8 @@ extern char g_fixturename[256];
 extern char g_testlib_olddir[PATH_MAX];
 extern char g_testlib_tmpdir[PATH_MAX];
 extern bool g_testlib_shoulddebugbreak;     /* set by testmain */
-extern unsigned g_testlib_ran;              /* set by wrappers */
-extern unsigned g_testlib_failed;           /* set by wrappers */
+extern _Atomic(unsigned) g_testlib_ran;     /* set by wrappers */
+extern _Atomic(unsigned) g_testlib_failed;  /* set by wrappers */
 extern const char *testlib_showerror_errno; /* set by macros */
 extern const char *testlib_showerror_file;  /* set by macros */
 extern const char *testlib_showerror_func;  /* set by macros */