build: disable -Wtautological-constant-out-of-range-compare

Also see e31f92495c and
https://lists.gnu.org/archive/html/bug-bison/2019-10/msg00061.html

* configure.ac (warn_common): Disable
-Wtautological-constant-out-of-range-compare.
(warn_tests): Restore it.

configure.ac

@@ -94,10 +94,16 @@ AC_ARG_ENABLE([gcc-warnings],
               [enable_gcc_warnings=no])
 AM_CONDITIONAL([ENABLE_GCC_WARNINGS], [test "$enable_gcc_warnings" = yes])
 if test "$enable_gcc_warnings" = yes; then
+  # -Wno-tautological-constant-out-of-range-compare for Clang 3.3 and
+  # 3.4 on GNU/Linux that choke on intprops.h's INT_MULTIPLY_WRAPV,
+  # etc.  It's also for these macros, but on GCC 7, 8 and 9 on macOS
+  # and GCC 4.6, 4.7 and 4.9 on GNU/Linux, that we disable
+  # -Wtype-limits globally.  See
+  # https://lists.gnu.org/archive/html/bug-bison/2019-10/msg00061.html.
   warn_common='-Wall -Wextra -Wcast-align
     -fparse-all-comments -Wdocumentation
     -Wformat -Wimplicit-fallthrough -Wnull-dereference
-    -Wno-sign-compare -Wno-type-limits
+    -Wno-sign-compare -Wno-tautological-constant-out-of-range-compare -Wno-type-limits
     -Wpointer-arith -Wshadow
     -Wwrite-strings'
   warn_c='-Wbad-function-cast -Wstrict-prototypes'
@@ -112,7 +118,8 @@ if test "$enable_gcc_warnings" = yes; then
   # trick in the test suite to check some private implementation
   # details for lalr1.cc.
   warn_tests='-Wundef -pedantic -Wconversion
-    -Wdeprecated -Wsign-compare -Wsign-conversion -Wtype-limits
+    -Wdeprecated -Wsign-compare -Wsign-conversion
+    -Wtautological-constant-out-of-range-compare -Wtype-limits
     -fno-color-diagnostics
     -Wno-keyword-macro'