Fix update unpacking

GitAddonsManager.pro

@@ -37,7 +37,10 @@ HEADERS += \
 LIBS += -lgit2
 
 win32 {
-    DEFINES += _WIN32_WINNT=0x06010000
+    DEFINES += _WIN32_WINNT=0x06010000 GAM_EXEC=\\\"$${TARGET}.exe\\\"
+}
+unix {
+    DEFINES += GAM_EXEC=\\\"$${TARGET}\\\"
 }
 
 isEmpty(GIT_DESCRIBE){

control.cpp

@@ -490,10 +490,12 @@ void Control::downloadUpdate()
 void Control::executeUpdate()
 {
     delegate("Apply Update", [this](){
-        QuaZip zip("GitAddonsManager.zip");
+        QDir appRoot(QApplication::applicationDirPath());
+        QuaZip zip(appRoot.absoluteFilePath("GitAddonsManager.zip"));
         if (!zip.open(QuaZip::mdUnzip))
             return;
-        QDir root(QApplication::applicationDirPath() + "/update");
+        QDir root(appRoot.absoluteFilePath("update"));
+        appRoot.mkdir(root.absolutePath());
         unsigned int size = 0;
         foreach (const QuaZipFileInfo &info, zip.getFileInfoList())
             size += info.uncompressedSize;
@@ -515,8 +517,8 @@ void Control::executeUpdate()
             f.close();
         }
         zip.close();
-        QFile::remove("GitAddonsManager.zip");
-        QFile exe(root.absoluteFilePath("GitAddonsManager"));
+        QFile::remove(appRoot.absoluteFilePath("GitAddonsManager.zip"));
+        QFile exe(root.absoluteFilePath(GAM_EXEC));
         exe.setPermissions(QFile::ExeOwner | exe.permissions());
     },[this](){
         setUpdateStatus(UpdateStatus::UpdateDone);

main.cpp

@@ -83,9 +83,9 @@ int main(int argc, char *argv[])
     if (res == 2) {
         QStringList args = app.arguments().mid(1);
         args << "--update" << QString("\"%1\"").arg(app.applicationDirPath());
-        QProcess().startDetached(app.applicationDirPath()+"/update/GitAddonsManager", args);
+        QProcess().startDetached(app.applicationDirPath()+"/update/" + GAM_EXEC, args);
     }
     if (res == 3)
-        QProcess().startDetached(update + "/GitAddonsManager", QApplication::arguments().mid(1) << "--update" << "");
+        QProcess().startDetached(update + "/" + GAM_EXEC, QApplication::arguments().mid(1) << "--update" << "");
     return res;
 }

main.qml

@@ -169,7 +169,7 @@ ApplicationWindow {
                                                 Engine.updateStatus === Engine.DownloadingUpdate ?
                                                     qsTr("Downloading update...") :
                                                     Engine.updateStatus === Engine.UpdateReady ?
-                                                        qsTr("Apply update") : qsTr("error")
+                                                        qsTr("Unpacking update") : qsTr("error")
                             }
                         }
                         onClicked: Engine.updateStatus === Engine.NoUpdate ?