Drop umbrella include from 10 more .c files (batch 3)

Converted: hpa_hooks, san_bump, sz, cache_bin, bitmap, hpa_central,
witness, fxp, buf_writer, edata_cache.

No latent hermeticity bugs in headers this batch -- a few .c files
just needed previously-transitive includes added (e.g. hpa_central.c
needed hpa.h for hpa_supported()).

Step 6 (Option B) of the cyclical-dep cleanup, batch 3 of N.

src/bitmap.c

@@ -1,7 +1,7 @@
 #include "jemalloc/internal/jemalloc_preamble.h"
-#include "jemalloc/internal/jemalloc_internal_includes.h"
 
 #include "jemalloc/internal/assert.h"
+#include "jemalloc/internal/bitmap.h"
 
 /******************************************************************************/
 

src/buf_writer.c

@@ -1,7 +1,8 @@
 #include "jemalloc/internal/jemalloc_preamble.h"
-#include "jemalloc/internal/jemalloc_internal_includes.h"
 
 #include "jemalloc/internal/buf_writer.h"
+#include "jemalloc/internal/jemalloc_internal_inlines_a.h"
+#include "jemalloc/internal/jemalloc_internal_inlines_c.h"
 #include "jemalloc/internal/malloc_io.h"
 
 static void *

src/cache_bin.c

@@ -1,6 +1,6 @@
 #include "jemalloc/internal/jemalloc_preamble.h"
-#include "jemalloc/internal/jemalloc_internal_includes.h"
 
+#include "jemalloc/internal/base.h"
 #include "jemalloc/internal/bit_util.h"
 #include "jemalloc/internal/cache_bin.h"
 #include "jemalloc/internal/safety_check.h"

src/edata_cache.c

@@ -1,5 +1,7 @@
 #include "jemalloc/internal/jemalloc_preamble.h"
-#include "jemalloc/internal/jemalloc_internal_includes.h"
+
+#include "jemalloc/internal/edata_cache.h"
+#include "jemalloc/internal/witness.h"
 
 bool
 edata_cache_init(edata_cache_t *edata_cache, base_t *base) {

src/fxp.c

@@ -1,7 +1,7 @@
 #include "jemalloc/internal/jemalloc_preamble.h"
-#include "jemalloc/internal/jemalloc_internal_includes.h"
 
 #include "jemalloc/internal/fxp.h"
+#include "jemalloc/internal/malloc_io.h"
 
 static bool
 fxp_isdigit(char c) {

src/hpa_central.c

@@ -1,6 +1,6 @@
 #include "jemalloc/internal/jemalloc_preamble.h"
-#include "jemalloc/internal/jemalloc_internal_includes.h"
 
+#include "jemalloc/internal/hpa.h"
 #include "jemalloc/internal/hpa_central.h"
 #include "jemalloc/internal/tsd.h"
 #include "jemalloc/internal/witness.h"

src/hpa_hooks.c

@@ -1,8 +1,9 @@
 #include "jemalloc/internal/jemalloc_preamble.h"
-#include "jemalloc/internal/jemalloc_internal_includes.h"
 
 #include "jemalloc/internal/hpa_hooks.h"
 #include "jemalloc/internal/jemalloc_probe.h"
+#include "jemalloc/internal/nstime.h"
+#include "jemalloc/internal/pages.h"
 
 static void    *hpa_hooks_map(size_t size);
 static void     hpa_hooks_unmap(void *ptr, size_t size);

src/san_bump.c

@@ -1,11 +1,12 @@
 #include "jemalloc/internal/jemalloc_preamble.h"
-#include "jemalloc/internal/jemalloc_internal_includes.h"
 
-#include "jemalloc/internal/san_bump.h"
+#include "jemalloc/internal/edata_cache.h"
+#include "jemalloc/internal/ehooks.h"
+#include "jemalloc/internal/extent.h"
+#include "jemalloc/internal/mutex.h"
 #include "jemalloc/internal/pac.h"
 #include "jemalloc/internal/san.h"
-#include "jemalloc/internal/ehooks.h"
-#include "jemalloc/internal/edata_cache.h"
+#include "jemalloc/internal/san_bump.h"
 
 static bool san_bump_grow_locked(tsdn_t *tsdn, san_bump_alloc_t *sba,
     pac_t *pac, ehooks_t *ehooks, size_t size);

src/sz.c

@@ -1,5 +1,5 @@
 #include "jemalloc/internal/jemalloc_preamble.h"
-#include "jemalloc/internal/jemalloc_internal_includes.h"
+
 #include "jemalloc/internal/sz.h"
 
 JEMALLOC_ALIGNED(CACHELINE)

src/witness.c

@@ -1,8 +1,8 @@
 #include "jemalloc/internal/jemalloc_preamble.h"
-#include "jemalloc/internal/jemalloc_internal_includes.h"
 
 #include "jemalloc/internal/assert.h"
 #include "jemalloc/internal/malloc_io.h"
+#include "jemalloc/internal/witness.h"
 
 void
 witness_init(witness_t *witness, const char *name, witness_rank_t rank,