maint: avoid "magic number exit".

	* cfg.mk (local-checks-to-skip): No longer skip it.
	* bootstrap.conf (gnulib_modules): Add sysexits.
	* doc/bison.texinfo, etc/bench.pl.in, src/parse-gram.y,
	* src/system.h, tests/calc.at, tests/named-refs.at: Use assert
	where appropriate instead of "if (...) exit".
	Use symbolic exit status elsewhere.

Conflicts:

	doc/bison.texinfo
	src/parse-gram.y

1 files changed, 1 insertions, 0 deletions

diff --git a/src/system.h b/src/system.h
index 52b597b1..1c02f253 100644
--- a/src/system.h
+++ b/src/system.h
@@ -52,6 +52,7 @@
 typedef size_t uintptr_t;
 #endif
 
+#include <sysexits.h>
 
 /*---------.
 | Gnulib.  |