MINSIGSTKSZ is no longer constant in glibc

MINSIGSTKSZ is redefined to sysconf(_SC_MINSIGSTKSZ) starting from glibc 2.34

Author: t-bltg

src/task.c

@@ -29,6 +29,7 @@
 #include <stdlib.h>
 #include <string.h>
 #include <signal.h>
+#include <unistd.h>
 #include <errno.h>
 #include <inttypes.h>
 #include "julia.h"
@@ -67,7 +68,7 @@ static inline void tsan_switch_to_ctx(void *state)  {
 
 // empirically, jl_finish_task needs about 64k stack space to infer/run
 // and additionally, gc-stack reserves 64k for the guard pages
-#if defined(MINSIGSTKSZ) && MINSIGSTKSZ > 131072
+#if defined(MINSIGSTKSZ)
 #define MINSTKSZ MINSIGSTKSZ
 #else
 #define MINSTKSZ 131072