[CLEANUP] remove dependency on obsolete INTBITS macro
The INTBITS macro was found to be already defined on some platforms,
and to equal 32 (while INTBITS was 5 here). Due to pure luck, there
was no declaration conflict, but it's nonetheless a problem to fix.
Looking at the code showed that this macro was only used for left
shifts and nothing else anymore. So the replacement is obvious. The
new macro, BITS_PER_INT is more obviously correct.
diff --git a/include/common/compat.h b/include/common/compat.h
index 4e86325..8d406e5 100644
--- a/include/common/compat.h
+++ b/include/common/compat.h
@@ -37,11 +37,9 @@
#include <common/config.h>
#include <common/standard.h>
-/* INTBITS
- * how many bits are needed to code the size of an int on the target platform.
- * (eg: 32bits -> 5)
- */
-#define INTBITS 5
+#ifndef BITS_PER_INT
+#define BITS_PER_INT (8*sizeof(int))
+#endif
/* this is for libc5 for example */
#ifndef TCP_NODELAY