Updating Opus to release 1.1

win32/genversion.bat

 @echo off
 
 setlocal enableextensions enabledelayedexpansion
 
-for /f %%v in ('git describe --tags --match "v*"') do set version=%%v
+for /f %%v in ('git --git-dir="%~dp0..\.git" describe --tags --match "v*"') do set version=%%v
 
 if not "%version%"=="" goto :gotversion
 
 if exist "%~dp0..\version.mk" goto :getversion
 
 echo Git cannot be found, nor can version.mk. Generating unknown version.
 
 set version=unknown
 
 goto :gotversion
 
 :getversion
 
-for /f "delims== tokens=2" %%v in (%~dp0..\version.mk) do set version=%%v
+for /f "delims== tokens=2" %%v in (%~dps0..\version.mk) do set version=%%v
 
 set version=!version:^"=!
 set version=!version: =!
 
 :gotversion
 
 set version_out=#define %2 "%version%"
 set version_mk=%2 = "%version%"
 
-echo %version_out%> %1_temp
+echo %version_out%> "%1_temp"
 
 if %version%==unknown goto :skipgenerate
 
 echo # static version string; update manually every release.> "%~dp0..\version.mk"
 echo %version_mk%>> "%~dp0..\version.mk"
 
 :skipgenerate
 
-echo n | comp %1_temp %1 > NUL 2> NUL
+echo n | comp "%1_temp" "%1" > NUL 2> NUL
 
 if not errorlevel 1 goto exit
 
-copy /y %1_temp %1
+copy /y "%1_temp" "%1"
 
 :exit
 
-del %1_temp
+del "%1_temp"