Remove more nonstandard stuff from cosmopolitan.h

Fixes #61

libc/alg/replacestr.c

@@ -18,7 +18,7 @@
 ╚─────────────────────────────────────────────────────────────────────────────*/
 #include "libc/alg/alg.h"
 #include "libc/alg/arraylist2.internal.h"
-#include "libc/bits/safemacros.h"
+#include "libc/bits/safemacros.internal.h"
 #include "libc/str/str.h"
 #include "libc/sysv/errfuns.h"
 

libc/alg/reverse.internal.h

@@ -1,6 +1,6 @@
 #ifndef COSMOPOLITAN_LIBC_ALG_REVERSE_H_
 #define COSMOPOLITAN_LIBC_ALG_REVERSE_H_
-#include "libc/bits/xchg.h"
+#include "libc/bits/xchg.internal.h"
 #if !(__ASSEMBLER__ + __LINKER__ + 0)
 
 /**
@@ -11,7 +11,6 @@
  * @return pointer to start of array
  * @see ARRAYLEN()
  */
-#ifndef reverse
 #define reverse(ARRAY, COUNT)              \
   ({                                       \
     autotype(&(ARRAY)[0]) Array = (ARRAY); \
@@ -27,7 +26,6 @@
     }                                      \
     Array;                                 \
   })
-#endif /* reverse */
 
 #endif /* !(__ASSEMBLER__ + __LINKER__ + 0) */
 #endif /* COSMOPOLITAN_LIBC_ALG_REVERSE_H_ */

libc/alg/shuffle.internal.h

@@ -1,7 +1,7 @@
 #ifndef COSMOPOLITAN_LIBC_RAND_SHUFFLE_H_
 #define COSMOPOLITAN_LIBC_RAND_SHUFFLE_H_
+#include "libc/bits/xchg.internal.h"
 #if !(__ASSEMBLER__ + __LINKER__ + 0)
-#include "libc/bits/xchg.h"
 
 /**
  * Fisher-Yates shuffle.
@@ -11,7 +11,6 @@
  * @param n is the number of items in A
  * @see ARRAYLEN()
  */
-#ifndef shuffle
 #define shuffle(R, A, n)                      \
   do {                                        \
     autotype(A) Array = (A);                  \
@@ -19,7 +18,6 @@
       xchg(&Array[i], &Array[R() % (i + 1)]); \
     }                                         \
   } while (0)
-#endif /* shuffle */
 
 #endif /* !(__ASSEMBLER__ + __LINKER__ + 0) */
 #endif /* COSMOPOLITAN_LIBC_RAND_SHUFFLE_H_ */

libc/alg/tarjan.c

@@ -19,7 +19,7 @@
 #include "libc/alg/alg.h"
 #include "libc/assert.h"
 #include "libc/limits.h"
-#include "libc/macros.h"
+#include "libc/macros.internal.h"
 #include "libc/mem/mem.h"
 
 /**