sh-elf-vhex - v2.0.0-rc4 : change the user input workaround

*fix*
> [scripts]
  | [bootstrap] force input validation even in curl mode

scripts/binutils/configure.sh

@@ -130,7 +130,7 @@ then
     "$TAG Based on $pm, some dependencies are missing: $missing\n" \
     "$TAG Do you want to run '$pm_install $missing' to install "   \
     'them [nY]? '
-  read -r do_install
+  read -r do_install < /dev/tty
   if [[ "$do_install" != 'n' ]]
   then
     bash -c "$pm_install $missing"

scripts/bootstrap.sh

@@ -110,9 +110,9 @@ then
   echo " - Binutils version:      $version_binutils"
   echo " - Clone directory:       $prefix_clone"
   echo " - Compliler install at:  $prefix_install"
-  read -p 'Process ? [yN]: ' -r valid
+  read -p 'Process ? [yN]: ' -r valid < /dev/tty
 else
-    read -p 'Uninstall the sh-elf-vhex compiler ? [yN]: ' -r valid
+    read -p 'Uninstall the sh-elf-vhex compiler ? [yN]: ' -r valid < dev/tty
 fi
 
 # check if the stdin exists, which is not the case when the script is piped

scripts/gcc/configure.sh

@@ -113,8 +113,10 @@ echo "$TAG install dependencies..."
 cd ./archive || exit 1
 if ! utils_warn_callcmd ./contrib/download_prerequisites
 then
-  echo "The installation of GCC's prerequisites has failed"
-  read -p 'Do you want to continue the installation ? [yN]: ' -r valid
+  echo -en \
+    'The installation of GCC'\''s prerequisites has failed\n' \
+    'Do you want to continue the installation ? [yN]: '
+  read -r valid < /dev/tty
   if [[ "$valid" != 'y' ]]; then
     echo 'Operation aborted o(x_x)o'
     exit 1