Improved UpgradeDLL macro

[CodeSquid]

The improved UpgradeDLL macro can upgrades DLLs that are in use.

!macro UpgradeDLL
Exch $0
Push $1
Push $2
Push $3
Push $4
Push $5
ClearErrors
GetDLLVersionLocal ${DLL_NAME} $1 $2
GetDLLVersion $0 $3 $4
IfErrors upgrade_${DLL_NAME}
IntCmpU $1 $3 noupgrade_${DLL_NAME} noupgrade_${DLL_NAME} upgrade_${DLL_NAME}
IntCmpU $2 $4 noupgrade_${DLL_NAME} noupgrade_${DLL_NAME}
upgrade_${DLL_NAME}:
GetTempFileName $5
File /oname=$5 ${DLL_NAME}
UnRegDLL $0
delete /REBOOTOK $0
rename /REBOOTOK $5 $0
IfRebootFlag regreboot regnoreboot
regreboot:
WriteRegStr HKLM Software\Microsoft\Windows\CurrentVersion\RunOnce $0 "$SYSDIR\regsvr32 /s $0"
goto regrebootfinish
regnoreboot:
RegDLL $0
regrebootfinish:
noupgrade_${DLL_NAME}:
Pop $5
Pop $4
Pop $3
Pop $2
Pop $1
Pop $0
!undef DLL_NAME
!macroend