Tweak code to allow compilation of concatenated src/*.c sources.

This resolves #294.

src/ctl.c

@@ -115,7 +115,7 @@ CTL_PROTO(tcache_create)
 CTL_PROTO(tcache_flush)
 CTL_PROTO(tcache_destroy)
 CTL_PROTO(arena_i_purge)
-static void	arena_purge(unsigned arena_ind);
+static void	arena_i_purge(unsigned arena_ind);
 CTL_PROTO(arena_i_dss)
 CTL_PROTO(arena_i_lg_dirty_mult)
 CTL_PROTO(arena_i_chunk_hooks)
@@ -1538,7 +1538,7 @@ label_return:
 
 /* ctl_mutex must be held during execution of this function. */
 static void
-arena_purge(unsigned arena_ind)
+arena_i_purge(unsigned arena_ind)
 {
 	tsd_t *tsd;
 	unsigned i;
@@ -1576,7 +1576,7 @@ arena_i_purge_ctl(const size_t *mib, size_t miblen, void *oldp, size_t *oldlenp,
 	READONLY();
 	WRITEONLY();
 	malloc_mutex_lock(&ctl_mtx);
-	arena_purge(mib[1]);
+	arena_i_purge(mib[1]);
 	malloc_mutex_unlock(&ctl_mtx);
 
 	ret = 0;

src/util.c

@@ -1,3 +1,7 @@
+/*
+ * Define simple versions of assertion macros that won't recurse in case
+ * of assertion failures in malloc_*printf().
+ */
 #define	assert(e) do {							\
 	if (config_debug && !(e)) {					\
 		malloc_write("<jemalloc>: Failed assertion\n");		\
@@ -648,3 +652,12 @@ malloc_printf(const char *format, ...)
 	malloc_vcprintf(NULL, NULL, format, ap);
 	va_end(ap);
 }
+
+/*
+ * Restore normal assertion macros, in order to make it possible to compile all
+ * C files as a single concatenation.
+ */
+#undef assert
+#undef not_reached
+#undef not_implemented
+#include "jemalloc/internal/assert.h"