I noticed creation of 'appcompat' library while creating new android project with ADT 22.6.2 version, even when the minSDK was set to 11 and targetSDK was set 19
This was happening because, in the new project template android is using some attributes that are from the support library. For instance if a new project was created with actionbar then in the menu's main.xml one could find app:showAsAction="never"
which is from support library.
android:showAsAction
in menu's main.xmlAlso the default theme set could be "Theme.AppCompat.Light.DarkActionBar" as shown below (styles.xml)
<style name="AppBaseTheme" parent="Theme.AppCompat.Light.DarkActionBar">
<!-- API 14 theme customizations can go here. -->
</style>
In this case the parent theme in style.xml has to be changed to "android:style/Theme.Holo.Light.DarkActionBar"