Fix #7911 - allow spaces in service name

when (un)installing via (un)install_service.bat

Author: reevespaul

builds/install/arch-specific/win32/install_service.bat

@@ -1,19 +1,19 @@
 @echo off
-if "%1"=="" (
+if "%~1"=="" (
 instreg install -z
 )
 setlocal
 set INSTALL_SERVICE=install -z
 set START_SERVICE=start
-if not "%1"=="" (
+if not "%~1"=="" (
 set INSTALL_SERVICE=%INSTALL_SERVICE% -n %1
 set START_SERVICE=%START_SERVICE% -n %1
 )
 instsvc %INSTALL_SERVICE%
 instsvc %START_SERVICE%
 endlocal
 @echo.
-@echo Firebird installed and started as a service using 
+@echo Firebird installed and started as a service using
 @echo architecture specified in firebird.conf.
 @echo.
 

builds/install/arch-specific/win32/uninstall_service.bat

@@ -2,12 +2,12 @@
 setlocal
 set REMOVE_SERVICE=remove -z
 set STOP_SERVICE=stop
-if not "%1"=="" (
+if not "%~1"=="" (
 set STOP_SERVICE=%STOP_SERVICE% -n %1
 set REMOVE_SERVICE=%REMOVE_SERVICE% -n %1
 )
 instsvc %STOP_SERVICE%
 instsvc %REMOVE_SERVICE%
 endlocal
 
-if "%1"=="" (instreg remove -z)
+if "%~1"=="" (instreg remove -z)