Added support for label thunderbird_intl

Uses similar code as firefox_intl and firefoxesr_intl.

fragments/labels/thunderbird_intl.sh

@@ -0,0 +1,25 @@
+thunderbird_intl)
+    # This label will try to figure out the selected language of the user,
+    # and install corrosponding version of Thunderbird
+    name="Thunderbird"
+    type="dmg"
+    userLanguage=$(runAsUser defaults read .GlobalPreferences AppleLocale | tr '_' '-')
+    printlog "Found language $userLanguage to be used for $name."
+    releaseURL="https://ftp.mozilla.org/pub/thunderbird/releases/latest/README.txt"
+    until curl -fs $releaseURL | grep -q "=$userLanguage"; do
+        if [ ${#userLanguage} -eq 2 ]; then
+            break
+        fi
+        printlog "No locale matching '$userLanguage', trying '${userLanguage:0:2}'"
+        userLanguage=${userLanguage:0:2}
+    done
+    printlog "Using language '$userLanguage' for download."
+    downloadURL="https://download.mozilla.org/?product=thunderbird-latest&os=osx&lang=$userLanguage"
+    if ! curl -sfL --output /dev/null -r 0-0 $downloadURL; then
+        printlog "Download not found for '$userLanguage', using default ('en-US')."
+        downloadURL="https://download.mozilla.org/?product=thunderbird-latest&os=osx"
+    fi
+    appNewVersion=$(curl -fsIL $downloadURL | awk -F releases/ '/Location:/ {split($2,a,"/"); print a[1]}')
+    expectedTeamID="43AQ936H96"
+    blockingProcesses=( thunderbird )
+    ;;