elf.c: section limit inference for linux, fixes for stb_ds.h hashing, more compilation flags

src/system/linux/elf.h

@@ -0,0 +1,10 @@
+#ifndef ELF_H
+#define ELF_H
+
+#include <stdbool.h>
+
+bool infer_elf_section_bounds(const char *restrict name,
+							  const char **restrict vm_start,
+							  const char **restrict vm_end);
+
+#endif