trusty fixes, remove legacy grub

fixes #84

bin/gbuild

@@ -96,7 +96,7 @@ def build_one_configuration(suite, arch, build_desc, reference_datetime)
   info "Installing additional packages (log in var/install.log)"
   system! "on-target -u root -e DEBIAN_FRONTEND=noninteractive apt-get --no-install-recommends -y install #{build_desc["packages"].join(" ")} > var/install.log 2>&1"
 
-  info "Grabbing package manifest"
+  info "Downloading system packages and creating manifest. This may take a while."
   system! "on-target -u root bash < target-bin/grab-packages.sh > var/base-#{suitearch}.manifest"
 
   info "Creating build script (var/build-script)"

target-bin/grab-packages.sh

@@ -8,5 +8,8 @@ cd /var/cache/apt/archives
 
 #apt-get clean
 
+# remove obsolete grub, it causes package dependency issues
+apt-get -y purge grub > /dev/null || true
+
 dpkg-query -W -f '${Package}\n' | xargs -n 50 apt-get install --reinstall -y -d  > /dev/null
 sha256sum *.deb | sort --key 2