Fix tests build when --with-install-suffix is set.

Add test/jemalloc_test.h.in, which is processed to include
jemalloc/jemalloc@install_suffix@.h, so that test programs can include
it without worrying about the install suffix.

jemalloc/Makefile.in

@@ -90,8 +90,8 @@ all: $(DSOS)
 
 @objroot@test/%.o: @srcroot@test/%.c
 	@mkdir -p $(@D)
-	$(CC) $(CFLAGS) -c $(CPPFLAGS) -o $@ $<
-	@$(SHELL) -ec "$(CC) -MM $(CPPFLAGS) $< | sed \"s/\($(subst /,\/,$(notdir $(basename $@)))\)\.o\([ :]*\)/$(subst /,\/,$(strip $(dir $@)))\1.o \2/g\" > $(@:%.o=%.d)"
+	$(CC) $(CFLAGS) -c $(CPPFLAGS) -I@objroot@test -o $@ $<
+	@$(SHELL) -ec "$(CC) -MM $(CPPFLAGS) -I@objroot@test $< | sed \"s/\($(subst /,\/,$(notdir $(basename $@)))\)\.o\([ :]*\)/$(subst /,\/,$(strip $(dir $@)))\1.o \2/g\" > $(@:%.o=%.d)"
 
 @objroot@test/%: @objroot@test/%.o \
 		 @objroot@lib/libjemalloc@install_suffix@.$(SO)

jemalloc/configure.ac

@@ -274,14 +274,17 @@ AC_SUBST([install_suffix])
 cfgoutputs_in="${srcroot}Makefile.in ${srcroot}doc/jemalloc.3.in"
 cfgoutputs_in="${cfgoutputs_in} ${srcroot}include/jemalloc/jemalloc.h.in"
 cfgoutputs_in="${cfgoutputs_in} ${srcroot}include/jemalloc/internal/jemalloc_internal.h.in"
+cfgoutputs_in="${cfgoutputs_in} ${srcroot}test/jemalloc_test.h.in"
 
 cfgoutputs_out="Makefile doc/jemalloc${install_suffix}.3"
 cfgoutputs_out="${cfgoutputs_out} include/jemalloc/jemalloc${install_suffix}.h"
 cfgoutputs_out="${cfgoutputs_out} include/jemalloc/internal/jemalloc_internal.h"
+cfgoutputs_out="${cfgoutputs_out} test/jemalloc_test.h"
 
 cfgoutputs_tup="Makefile doc/jemalloc${install_suffix}.3:doc/jemalloc.3.in"
 cfgoutputs_tup="${cfgoutputs_tup} include/jemalloc/jemalloc${install_suffix}.h:include/jemalloc/jemalloc.h.in"
 cfgoutputs_tup="${cfgoutputs_tup} include/jemalloc/internal/jemalloc_internal.h"
+cfgoutputs_tup="${cfgoutputs_tup} test/jemalloc_test.h:test/jemalloc_test.h.in"
 
 cfghdrs_in="${srcroot}include/jemalloc/jemalloc_defs.h.in"
 

jemalloc/test/allocm.c

@@ -3,7 +3,7 @@
 #include <stdint.h>
 
 #define	JEMALLOC_MANGLE
-#include "jemalloc/jemalloc.h"
+#include "jemalloc_test.h"
 
 #define CHUNK 0x400000
 /* #define MAXALIGN ((size_t)0x80000000000LLU) */

jemalloc/test/jemalloc_test.h.in

@@ -0,0 +1,6 @@
+/*
+ * This header should be included by tests, rather than directly including
+ * jemalloc/jemalloc.h, because --with-install-suffix may cause the header to
+ * have a different name.
+ */
+#include "jemalloc/jemalloc@install_suffix@.h"

jemalloc/test/posix_memalign.c

@@ -5,7 +5,7 @@
 #include <string.h>
 
 #define	JEMALLOC_MANGLE
-#include "jemalloc/jemalloc.h"
+#include "jemalloc_test.h"
 
 #define CHUNK 0x400000
 /* #define MAXALIGN ((size_t)0x80000000000LLU) */

jemalloc/test/rallocm.c

@@ -3,7 +3,7 @@
 #include <string.h>
 
 #define	JEMALLOC_MANGLE
-#include "jemalloc/jemalloc.h"
+#include "jemalloc_test.h"
 
 int
 main(void)

jemalloc/test/thread_arena.c

@@ -4,7 +4,7 @@
 #include <string.h>
 
 #define	JEMALLOC_MANGLE
-#include "jemalloc/jemalloc.h"
+#include "jemalloc_test.h"
 
 void *
 thread_start(void *arg)