Add memory sanitizer to configure (--memory).

This also adds --address for the address sanitizer, in addition to
the existing --sanitizer. -fno-omit-frame-pointer has been added
for both sanitizers to improve the error reporting.

configure

@@ -90,7 +90,8 @@ build64=0
 gcc=0
 warn=0
 debug=0
-sanitize=0
+address=0
+memory=0
 old_cc="$CC"
 old_cflags="$CFLAGS"
 OBJC='$(OBJZ) $(OBJG)'
@@ -102,7 +103,7 @@ leave()
  if test "$*" != "0"; then
  echo "** $0 aborting." | tee -a configure.log
  fi
- rm -f $test.[co] $test $test$shared_ext $test.gcno ./--version
+ rm -rf $test.[co] $test $test$shared_ext $test.gcno $test.dSYM ./--version
  echo -------------------- >> configure.log
  echo >> configure.log
  echo >> configure.log
@@ -141,7 +142,9 @@ case "$1" in
  -c* | --const) zconst=1; shift ;;
  -w* | --warn) warn=1; shift ;;
  -d* | --debug) debug=1; shift ;;
- --sanitize) sanitize=1; shift ;;
+ --sanitize) address=1; shift ;;
+ --address) address=1; shift ;;
+ --memory) memory=1; shift ;;
  *)
  echo "unknown option: $1" | tee -a configure.log
  echo "$0 --help for help" | tee -a configure.log
@@ -211,8 +214,11 @@ if test "$gcc" -eq 1 && ($cc -c $test.c) >> configure.log 2>&1; then
  CFLAGS="${CFLAGS} -Wall -Wextra"
  fi
  fi
- if test $sanitize -eq 1; then
- CFLAGS="${CFLAGS} -g -fsanitize=address"
+ if test $address -eq 1; then
+ CFLAGS="${CFLAGS} -g -fsanitize=address -fno-omit-frame-pointer"
+ fi
+ if test $memory -eq 1; then
+ CFLAGS="${CFLAGS} -g -fsanitize=memory -fno-omit-frame-pointer"
  fi
  if test $debug -eq 1; then
  CFLAGS="${CFLAGS} -DZLIB_DEBUG"