setup-ubuntu.sh: Remove cmake, add python3.6

scripts/setup-ubuntu.sh

@@ -5,7 +5,6 @@ PACKAGES="$PACKAGES ant"			# Used by jack and aptsigner.
 PACKAGES="$PACKAGES asciidoc"
 PACKAGES="$PACKAGES automake"
 PACKAGES="$PACKAGES bison"
-PACKAGES="$PACKAGES cmake"
 PACKAGES="$PACKAGES curl"			# Used for fetching sources.
 PACKAGES="$PACKAGES flex"
 PACKAGES="$PACKAGES gettext"			# Provides 'msgfmt' which the apt build uses.
@@ -20,6 +19,7 @@ PACKAGES="$PACKAGES libncurses5-dev"
 PACKAGES="$PACKAGES libtool-bin"
 PACKAGES="$PACKAGES lzip"
 PACKAGES="$PACKAGES nasm"			# Used by libjpeg-turbo for x86_64.
+PACKAGES="$PACKAGES python3.6"
 PACKAGES="$PACKAGES subversion"			# Used by the netpbm build.
 PACKAGES="$PACKAGES tar"
 PACKAGES="$PACKAGES unzip"