Move tzdata to extern/icu.

.github/workflows/tzdata-update.yml

@@ -19,13 +19,13 @@ jobs:
           VERSION=`ls /tmp/icu-checkout/tzdata/icunew/ -r1a |head -1`
           echo Last version: $VERSION
 
-          if [ "$VERSION" == "`cat tzdata/version.txt`" ]
+          if [ "$VERSION" == "`cat extern/icu/tzdata/version.txt`" ]
           then
             exit
           fi
 
-          echo $VERSION > tzdata/version.txt
-          tzdata/update.sh
+          echo $VERSION > extern/icu/tzdata/version.txt
+          extern/icu/tzdata/update.sh
 
       - name: Create Pull Request
         uses: peter-evans/create-pull-request@v2

builds/posix/Makefile.in

@@ -624,8 +624,8 @@ $(FIREBIRD_MSG):	$(BUILD_FILE) msg.timestamp
 tzdata: $(FIREBIRD)/tzdata
 
 # FIXME: For big-endian, be.zip must be used.
-$(FIREBIRD)/tzdata: $(ROOT)/tzdata/le.zip
-	unzip -o $(ROOT)/tzdata/le.zip -d $(FIREBIRD)/tzdata
+$(FIREBIRD)/tzdata: $(ROOT)/extern/icu/tzdata/le.zip
+	unzip -o $(ROOT)/extern/icu/tzdata/le.zip -d $(FIREBIRD)/tzdata
 
 $(BUILD_FILE):	$(BUILD_Objects) $(COMMON_LIB)
 	$(EXE_LINK) $(EXE_LINK_OPTIONS) $(LSB_UNDEF) $^ -o $@ $(FIREBIRD_LIBRARY_LINK) $(LINK_LIBS) $(call LINK_DARWIN_RPATH,..)

builds/win32/make_icu.bat

@@ -15,7 +15,7 @@ if errorlevel 1 call :ERROR build failed - see make_icu_%FB_TARGET_PLATFORM%.log
 
 @echo Extracting tzdata
 mkdir %FB_ROOT_PATH%\temp\%FB_OBJ_DIR%\firebird\tzdata
-call zipjs.bat unzip -source "%FB_LONG_ROOT_PATH%\tzdata\le.zip" -destination %FB_ROOT_PATH%\temp\%FB_OBJ_DIR%\firebird\tzdata -keep yes
+call zipjs.bat unzip -source "%FB_LONG_ROOT_PATH%\extern\icu\tzdata\le.zip" -destination %FB_ROOT_PATH%\temp\%FB_OBJ_DIR%\firebird\tzdata -keep yes
 
 @goto :EOF
 

extern/icu/Readme.txt

@@ -9,3 +9,7 @@ https://unicode-org.atlassian.net/browse/ICU-20302
 https://github.com/unicode-org/icu/pull/315
 
 The build was done using VS 2017 (15.9).
+
+---
+
+tzdata is automatically updated (pull request created) by GitHub Actions tzdata-update.yml.