gcc: update to 7.1 with tools * src/build-gcc.mk: update version 7.1.0 * src/cloog.mk: update 0.18.4 * src/gmp.mk: update 6.1.2 * src/isl.mk: update 0.16.1, add no-undefined flag * src/mpfr.mk: update 3.1.6 * src/native-gcc.mk: update 7.1.0 * src/isl-1-fixes.patch: removed file * dist-files.mk: remove reference to patch files, add mingw-w64 patch * src/build-gcc-1-mingw-float.patch: removed patch * src/native-gcc-1-mingw-float.patch: removed patch * src/build-gcc-2-intrinsics.patch: removed patch * src/native-gcc-2-intrinsics.patch: removed patch * src/mingw-w64.mk: update to 5.0.2 * src/gcc-1-mingw-float.patch: remove patch * src/gcc-2-darwin-no-pie.patch: remove patch * src/mingw-w64-2-pthreads.patch: new file * src/pthreads.mk: apply mingw patches to mingw sources before running configure

diff -ur ncurses-5.9.orig/ncurses/base/MKlib_gen.sh ncurses-5.9/ncurses/base/MKlib_gen.sh
--- ncurses-5.9.orig/ncurses/base/MKlib_gen.sh	2015-09-11 08:07:30.154205355 -0400
+++ ncurses-5.9/ncurses/base/MKlib_gen.sh	2015-09-11 08:10:59.265578376 -0400
@@ -436,12 +436,18 @@
 	-e 's/^\([a-zA-Z_][a-zA-Z_]*[ *]*\)/\1 gen_/' \
 	-e 's/gen_$//' \
 	-e 's/  / /g' >>$TMP
+cat >$ED1 <<EOF
+s/  / /g
+s/^ //
+s/ $//
+s/P_NCURSES_BOOL/NCURSES_BOOL/g
+EOF
+
+sed -e 's/bool/P_NCURSES_BOOL/g' $TMP > $ED2
+cat $ED2 >$TMP
 
 $preprocessor $TMP 2>/dev/null \
-| sed \
-	-e 's/  / /g' \
-	-e 's/^ //' \
-	-e 's/_Bool/NCURSES_BOOL/g' \
+| sed -f $ED1 \
 | $AWK -f $AW2 \
 | sed -f $ED3 \
 | sed \