Change ENABLE_VALGRIND_CHECKING to

* config.in: Regenerated.
	* configure: Likewise.
	* configure.ac: Handle --enable-valgrind-annotations.
	* lex.c (new_buff): Use ENABLE_VALGRIND_ANNOTATIONS instead
	of ENABLE_VALGRIND_CHECKING.
	(_cpp_free_buff): Likewise.

From-SVN: r236496

libcpp/configure

@@ -703,6 +703,7 @@ enable_maintainer_mode
 enable_checking
 enable_canonical_system_headers
 enable_host_shared
+enable_valgrind_annotations
 '
       ac_precious_vars='build_alias
 host_alias
@@ -1343,6 +1344,8 @@ Optional Features:
   --enable-canonical-system-headers
                           enable or disable system headers canonicalization
   --enable-host-shared    build host code as shared libraries
+  --enable-valgrind-annotations
+                          enable valgrind runtime interaction
 
 Optional Packages:
   --with-PACKAGE[=ARG]    use PACKAGE [ARG=yes]
@@ -7355,6 +7358,25 @@ fi
 
 
 
+# Check whether --enable-valgrind-annotations was given.
+if test "${enable_valgrind_annotations+set}" = set; then :
+  enableval=$enable_valgrind_annotations;
+else
+  enable_valgrind_annotations=no
+fi
+
+if test x$enable_valgrind_annotations != xno \
+    || test x$ac_valgrind_checking != x; then
+  if (test $have_valgrind_h = no \
+      && test $gcc_cv_header_memcheck_h = no \
+      && test $gcc_cv_header_valgrind_memcheck_h = no); then
+    as_fn_error "*** Can't find valgrind/memcheck.h, memcheck.h or valgrind.h" "$LINENO" 5
+  fi
+
+$as_echo "#define ENABLE_VALGRIND_ANNOTATIONS 1" >>confdefs.h
+
+fi
+
 # Output.
 
 ac_config_headers="$ac_config_headers config.h:config.in"