Update generate scripts

.gitignore

@@ -1,2 +1,3 @@
 local/
-build/
+build/
+user*.*

generate.bat

@@ -1,4 +1,6 @@
 @echo off
 
+cd %~dp0
+
 git submodule update --init --recursive
-tools\premake5.exe vs2019
+tools\premake5.exe %* vs2019

generate.sh

@@ -4,4 +4,4 @@
 cd "$(dirname "$0")" || exit 2
 
 git submodule update --init --recursive
-tools/premake5 gmake2
+tools/premake5 $@ gmake2