Update build scripts to Python 3 and add logging

Also updated code-recognition in rename_to_version.py from const to
constexpr.

Author: randomascii

make_zip_file.py

@@ -3,7 +3,7 @@
 import zipfile
 
 if len(sys.argv) < 3:
-  print "Usage: %s zipfile directory" % sys.argv[0]
+  print('Usage: %s zipfile directory' % sys.argv[0])
   sys.exit(0)
 
 filename = sys.argv[1]

package_etw.bat

@@ -40,9 +40,11 @@ set vcvars32="C:\Program Files (x86)\Microsoft Visual Studio\2019\Professional\V
 call %vcvars32%
 
 @rem Build DelayedCreateProcess.exe to the bin directory
+@echo Building DelayedCreateProcess.exe
 call DelayedCreateProcess\make.bat
 
 cd /d %UIforETW%ETWInsights
+@echo Building ETWInsights
 devenv /rebuild "release|Win32" ETWInsights.sln
 @if ERRORLEVEL 1 goto BuildFailure
 xcopy Release\flame_graph.exe %UIforETW%\bin /y
@@ -53,15 +55,18 @@ cd /d %UIforETW%UIforETW
 sed "s/UIforETW.vcxproj/UIforETWStatic.vcxproj/" <UIforETW.sln >UIforETWStatic.sln
 @echo First do a test build with ETW marks disabled to test the inline functions.
 sed "s/_WINDOWS/_WINDOWS;DISABLE_ETW_MARKS/" <UIforETW.vcxproj >UIforETWStatic.vcxproj
+@echo Building UIforETW 32-bit test build
 devenv /rebuild "release|Win32" UIforETWStatic.sln
 @if ERRORLEVEL 1 goto BuildFailure
 
 @rem Now prepare for the real builds
 sed "s/UseOfMfc>Dynamic/UseOfMfc>Static/" <UIforETW.vcxproj >UIforETWStatic.vcxproj
 if exist Release rmdir Release /s/q
 if exist x64\Release rmdir x64\Release /s/q
+@echo Building UIforETW 32-bit official build
 devenv /rebuild "release|Win32" UIforETWStatic.sln
 @if ERRORLEVEL 1 goto BuildFailure
+@echo Building UIforETW 64-bit official build
 devenv /rebuild "release|x64" UIforETWStatic.sln
 @if ERRORLEVEL 1 goto BuildFailure
 @rem Clean up after building the static version.
@@ -173,11 +178,11 @@ del etwsymserver\refs.ptr /s
 
 @rem Make the redistributable .zip file
 del *.zip 2>nul
-call python make_zip_file.py etwpackage.zip etwpackage
+call python3 make_zip_file.py etwpackage.zip etwpackage
 @echo on
 
 @rem Rename to the current version.
-call python rename_to_version.py UIforETW\Version.h
+call python3 rename_to_version.py UIforETW\Version.h
 @echo on
 
 @echo Now upload the new etwpackage*.zip
@@ -194,7 +199,7 @@ cd etwsymserver
 @rem Upload to the randomascii-symbols public symbol server.
 @echo Final step - ready to upload the symbols?
 @pause
-call python c:\src\depot_tools\gsutil.py cp -Z -R  . gs://randomascii-symbols
+call python3 c:\src\depot_tools\gsutil.py cp -Z -R  . gs://randomascii-symbols
 cd ..
 @echo on
 

rename_to_version.py

@@ -1,13 +1,14 @@
 import os
 import sys
 
-prefix = 'const float kCurrentVersion = '
+prefix = 'constexpr float kCurrentVersion = '
 
 version_header = sys.argv[1]
 for line in open(version_header).readlines():
 	if line.startswith(prefix):
 		version = line[len(prefix) : len(prefix) + 4]
-		print 'Renaming zip files to version "%s"' % version
+		print('Renaming zip files to version "%s"' % version)
 		os.rename('etwpackage.zip', 'etwpackage%s.zip' % version)
 		sys.exit(0)
-assert(0)
+
+assert(not "Didn't find header")