patch 8.0.1110: FORTIFY_SOURCE from Perl causes problems

Problem:    FORTIFY_SOURCE from Perl causes problems. (Scott Baker)
Solution:   Filter out the flag. (Christian Brabandt, closes #2068)

src/auto/configure

@@ -5717,9 +5717,10 @@ $as_echo "OK" >&6; }
 	fi
       done
 
-                  perlcppflags=`$vi_cv_path_perl -Mlib=$srcdir -MExtUtils::Embed \
+                        perlcppflags=`$vi_cv_path_perl -Mlib=$srcdir -MExtUtils::Embed \
-	      -e 'ccflags;perl_inc;print"\n"' | sed -e 's/-fno[^ ]*//' \
+		-e 'ccflags;perl_inc;print"\n"' | sed -e 's/-fno[^ ]*//' \
-			-e 's/-fdebug-prefix-map[^ ]*//g'`
+		-e 's/-fdebug-prefix-map[^ ]*//g' \
+		-e 's/\(-Wp,\)\?-D_FORTIFY_SOURCE=.//g`
             perllibs=`cd $srcdir; $vi_cv_path_perl -MExtUtils::Embed -e 'ldopts' | \
 		sed -e '/Warning/d' -e '/Note (probably harmless)/d' \
 			-e 's/-bE:perl.exp//' -e 's/-lc //'`

src/configure.ac

@@ -1005,9 +1005,11 @@ if test "$enable_perlinterp" = "yes" -o "$enable_perlinterp" = "dynamic"; then
       AC_SUBST(vi_cv_perl_xsubpp)
       dnl Remove "-fno-something", it breaks using cproto.
       dnl Remove "-fdebug-prefix-map", it isn't supported by clang.
+      dnl Remove "FORTIFY_SOURCE", it will be defined twice.
       perlcppflags=`$vi_cv_path_perl -Mlib=$srcdir -MExtUtils::Embed \
-	      -e 'ccflags;perl_inc;print"\n"' | sed -e 's/-fno[[^ ]]*//' \
+		-e 'ccflags;perl_inc;print"\n"' | sed -e 's/-fno[[^ ]]*//' \
-			-e 's/-fdebug-prefix-map[[^ ]]*//g'`
+		-e 's/-fdebug-prefix-map[[^ ]]*//g' \
+		-e 's/\(-Wp,\)\?-D_FORTIFY_SOURCE=.//g`
       dnl Remove "-lc", it breaks on FreeBSD when using "-pthread".
       perllibs=`cd $srcdir; $vi_cv_path_perl -MExtUtils::Embed -e 'ldopts' | \
 		sed -e '/Warning/d' -e '/Note (probably harmless)/d' \

src/version.c

@@ -769,6 +769,8 @@ static char *(features[]) =
 
 static int included_patches[] =
 {   /* Add new patch number below this line */
+/**/
+    1110,
 /**/
     1109,
 /**/