does JSF 2.1.7 (and 2.1.x in general) require Servlet 3.0 or just 2.5? If you look at pom http://repo1.maven.org/maven2/com/sun/faces/jsf-api/2.1.7/jsf-api-2.1.7.pom you'll find servlet 3, but it seems referred to JSF 2.2 (see also tag name: "Oracle's implementation of the JSF 2.2 specification API.")
I've found different answers to this question on the web. Can anyone help me? Some links:
Mojarra JSF 2.1.9 exception while loading a page which has got composite component Mojarra Java EE 5/6 compatibility https://forums.oracle.com/forums/thread.jspa?messageID=10140121
Thanks