Improve upgrade path to freeswitch-all

That is to say, declare all appropriate Provides/Conflicts/Replaces
for freeswitch-all and freeswitch-all-dbg by enumerating the binary
packages that we're going to produce during the build.

Conflicts is more appropriate than Breaks here as both packages will
continue to provide the same files on an ongoing basis and we would
like to force the removal of the other package.

debian/bootstrap.sh

@@ -46,6 +46,33 @@ avoid_mods_squeeze=(
   formats/mod_vlc
   languages/mod_managed
 )
+manual_pkgs=(
+freeswitch-all
+freeswitch
+libfreeswitch1
+freeswitch-meta-bare
+freeswitch-meta-default
+freeswitch-meta-vanilla
+freeswitch-meta-sorbet
+freeswitch-meta-all
+freeswitch-meta-codecs
+freeswitch-meta-conf
+freeswitch-meta-lang
+freeswitch-meta-mod-say
+freeswitch-all-dbg
+freeswitch-dbg
+libfreeswitch1-dbg
+libfreeswitch-dev
+freeswitch-doc
+freeswitch-init
+freeswitch-sysvinit
+freeswitch-systemd
+freeswitch-lang
+freeswitch-music
+freeswitch-sounds
+freeswitch-sounds-en
+freeswitch-sounds-en-us
+)
 
 err () {
   echo "$0 error: $1" >&2
@@ -61,6 +88,31 @@ xread () {
   return $ret
 }
 
+intersperse () {
+  local sep="$1"
+  awk "
+    BEGIN {
+      first=1;
+      sep=\"${sep}\";
+    }"'
+    /.*/ {
+      if (first == 0) {
+        printf "%s%s", sep, $0;
+      } else {
+        printf "%s", $0;
+      }
+      first=0;
+    }
+    END { printf "\n"; }'
+}
+
+postfix () {
+  local px="$1"
+  awk "
+    BEGIN { px=\"${px}\"; }"'
+    /.*/ { printf "%s%s\n", $0, px; }'
+}
+
 avoid_mod_filter () {
   local x="avoid_mods_$codename[@]"
   local -a mods=("${avoid_mods[@]}" "${!x}")
@@ -168,6 +220,60 @@ map_langs () {
   done
 }
 
+map_pkgs () {
+  local fsx="$1"
+  for x in "${manual_pkgs[@]}"; do
+    $fsx $x
+  done
+  map_pkgs_confs () { $fsx "freeswitch-conf-${conf//_/-}"; }
+  map_confs map_pkgs_confs
+  map_pkgs_langs () { $fsx "freeswitch-lang-${lang//_/-}"; }
+  map_langs map_pkgs_langs
+  map_pkgs_mods () {
+    $fsx "freeswitch-mod-${module//_/-}"
+    $fsx "freeswitch-mod-${module//_/-}-dbg"; }
+  map_modules map_pkgs_mods
+}
+
+list_pkgs () {
+  list_pkgs_thunk () { printf '%s\n' "$1"; }
+  map_pkgs list_pkgs_thunk
+}
+
+list_freeswitch_all_pkgs () {
+  list_pkgs \
+    | grep -v '^freeswitch-all$' \
+    | grep -v -- '-dbg$'
+}
+
+list_freeswitch_all_provides () {
+  list_freeswitch_all_pkgs \
+    | intersperse ',\n '
+}
+
+list_freeswitch_all_replaces () {
+  list_freeswitch_all_pkgs \
+    | postfix ' (<= ${binary:Version})' \
+    | intersperse ',\n '
+}
+
+list_freeswitch_all_dbg_pkgs () {
+  list_pkgs \
+    | grep -v '^freeswitch-all-dbg$' \
+    | grep -- '-dbg$'
+}
+
+list_freeswitch_all_dbg_provides () {
+  list_freeswitch_all_dbg_pkgs \
+    | intersperse ',\n '
+}
+
+list_freeswitch_all_dbg_replaces () {
+  list_freeswitch_all_dbg_pkgs \
+    | postfix ' (<= ${binary:Version})' \
+    | intersperse ',\n '
+}
+
 print_source_control () {
 cat <<EOF
 Source: freeswitch
@@ -207,17 +313,9 @@ print_core_control () {
 cat <<EOF
 Package: freeswitch-all
 Architecture: any
-Provides: freeswitch, libfreeswitch1, freeswitch-doc, freeswitch-init
+Provides: $(list_freeswitch_all_provides)
-Replaces: freeswitch (<= \${binary:Version}),
+Replaces: $(list_freeswitch_all_replaces)
- libfreeswitch1 (<= \${binary:Version}),
+Conflicts: $(list_freeswitch_all_replaces)
- freeswitch-doc (<= \${binary:Version}),
- freeswitch-sysvinit (<= \${binary:Version}),
- freeswitch-systemd (<= \${binary:Version})
-Breaks: freeswitch (<= \${binary:Version}),
- libfreeswitch1 (<= \${binary:Version}),
- freeswitch-doc (<= \${binary:Version}),
- freeswitch-sysvinit (<= \${binary:Version}),
- freeswitch-systemd (<= \${binary:Version})
 Depends: \${shlibs:Depends}, \${perl:Depends}, \${misc:Depends},
  freeswitch-music-default (>= 1.0.8),
  freeswitch-sounds-en-us-callie (>= 1.0.25) | freeswitch-sounds,
@@ -647,6 +745,9 @@ Package: freeswitch-all-dbg
 Section: debug
 Priority: extra
 Architecture: any
+Provides: $(list_freeswitch_all_dbg_provides)
+Replaces: $(list_freeswitch_all_dbg_replaces)
+Breaks: $(list_freeswitch_all_dbg_replaces)
 Depends: \${misc:Depends}, freeswitch (= \${binary:Version})
 Description: debugging symbols for FreeSWITCH
  $(debian_wrap "${fs_description}")