Add new installer argument /allowAppDataPluginsLoading

The new installer argument /allowAppDataPluginsLoading add file
allowAppDataPlugins.xml which allows Notepad++ to load plugins
from "%APPDATA%\Notepad++\plugins\"

PowerEditor/installer/nppSetup.nsi

@@ -37,6 +37,7 @@ Unicode true			; Generate a Unicode installer. It can only be used outside of se
 SetCompressor /SOLID lzma	; This reduces installer size by approx 30~35%
 ;SetCompressor /FINAL lzma	; This reduces installer size by approx 15~18%
 
+Var allowAppDataPluginsLoading
 
 !include "nsisInclude\winVer.nsh"
 !include "nsisInclude\globalDef.nsh"
@@ -82,15 +83,22 @@ page Custom ExtraOptions
 !define MUI_PAGE_CUSTOMFUNCTION_SHOW "un.CheckIfRunning"
 !insertmacro MUI_UNPAGE_INSTFILES
 
-; TODO for optional arg
-;!insertmacro GetParameters
-
 
 !include "nsisInclude\langs4Installer.nsh"
 
 Var diffArchDir2Remove
 Function .onInit
 
+	${GetParameters} $R0 
+	${GetOptions} $R0 "/allowAppDataPluginsLoading" $R1 ;case insensitive 
+	IfErrors appdataLoadNo appdataLoadYes
+appdataLoadNo:
+	StrCpy $allowAppDataPluginsLoading "false"
+	Goto appdataLoadDone
+appdataLoadYes:
+	StrCpy $allowAppDataPluginsLoading "true"
+appdataLoadDone:
+
 	SectionSetSize ${mainSection} 4500		; This is rough estimation of files present in function copyCommonFiles
 	InitPluginsDir			; Initializes the plug-ins dir ($PLUGINSDIR) if not already initialized.
 	Call preventInstallInWin9x

PowerEditor/installer/nsisInclude/mainSectionFuncs.nsh

@@ -42,7 +42,7 @@ Function setPathAndOptions
 		CreateDirectory $UPDATE_PATH\plugins\config
 	${EndIf}
 
-	${If} $allowPluginLoadFromUserDataChecked == ${BST_CHECKED}
+	${If} $allowAppDataPluginsLoading == "true"
 		File "..\bin\allowAppDataPlugins.xml"
 	${ELSE}
 		IfFileExists $INSTDIR\allowAppDataPlugins.xml 0 +2

PowerEditor/installer/nsisInclude/tools.nsh

@@ -100,6 +100,9 @@ Function ExtraOptions
 	${NSD_CreateCheckbox} 0 50 100% 30u "Allow plugins to be loaded from %APPDATA%\notepad++\plugins$\nIt could cause a security issue. Turn it on if you know what you are doing."
 	Pop $PluginLoadFromUserDataCheckboxHandle
 	${NSD_OnClick} $PluginLoadFromUserDataCheckboxHandle OnChange_PluginLoadFromUserDataCheckBox
+	${If} $allowAppDataPluginsLoading == "true"
+		${NSD_Check} $PluginLoadFromUserDataCheckboxHandle
+	${EndIf}
 
 	${NSD_CreateCheckbox} 0 110 100% 30u "Create Shortcut on Desktop"
 	Pop $ShortcutCheckboxHandle
@@ -138,6 +141,12 @@ FunctionEnd
 
 Function OnChange_PluginLoadFromUserDataCheckBox
 	${NSD_GetState} $PluginLoadFromUserDataCheckboxHandle $allowPluginLoadFromUserDataChecked
+
+	${If} $allowPluginLoadFromUserDataChecked == ${BST_CHECKED}
+		StrCpy $allowAppDataPluginsLoading "true"
+	${ELSE}
+		StrCpy $allowAppDataPluginsLoading "false"
+	${EndIf}
 FunctionEnd
 
 Function OnChange_ShortcutCheckBox