Repoint build stamping at the app-versioning skill's script

Replaces the repo-local Scripts/update_build_number.sh (which git-tagged
on every build) with the shared update_build_info.sh referenced in place
from indie-skills: same commit-count CFBundleVersion and BuildDate, adds
BuildHash, and makes release tagging opt-in via RELEASE_TAGGING=1.
Verified BuildDate/BuildHash/CFBundleVersion land in the built app.

Scripts/update_build_number.sh

@@ -1,35 +0,0 @@
-#!/bin/sh
-
-## IMPORTANT ##
-# Add the following files to Input Files configuraiton of the build phase
-# $(TARGET_BUILD_DIR)/$(INFOPLIST_PATH)
-# $(DWARF_DSYM_FOLDER_PATH)/$(DWARF_DSYM_FILE_NAME)/Contents/Info.plist
-
-git=$(sh /etc/profile; which git)
-number_of_commits=$("$git" rev-list HEAD --count)
-git_release_version=$("$git" describe --tags --always --abbrev=0)
-
-target_plist="$TARGET_BUILD_DIR/$INFOPLIST_PATH"
-dsym_plist="$DWARF_DSYM_FOLDER_PATH/$DWARF_DSYM_FILE_NAME/Contents/Info.plist"
-
-git_commit=`"$git" rev-parse --short HEAD`
-bundle_version=`/usr/libexec/PlistBuddy -c "Print :CFBundleShortVersionString" "$target_plist"`
-build_date=`date +%F`
-
-build="v$bundle_version-$git_commit b$number_of_commits $build_date"
-
-#echo "version=$bundle_version-$git_commit build $number_of_commits"
-
-"$git" tag "$bundle_version"
-
-for plist in "$target_plist" "$dsym_plist"; do
-  if [ -f "$plist" ]; then
-    /usr/libexec/PlistBuddy -c "Set :CFBundleVersion $number_of_commits" "$plist"
-#    /usr/libexec/PlistBuddy -c "Set :CFBundleShortVersionString ${version}" "$plist"
-#    /usr/libexec/PlistBuddy -c "Set :CFBundleShortVersionString ${git_release_version#*v}" "$plist"
-
-    # Add build date for AppInfoKit
-    /usr/libexec/PlistBuddy -c "Set :BuildDate $build_date" "$plist" 2>/dev/null || \
-    /usr/libexec/PlistBuddy -c "Add :BuildDate string $build_date" "$plist"
-  fi
-done