[Building Sakai] How to modify K1?

[Lydia Li]

Hi,

    We are starting to work on upgrading our local Sakai 2.4.x to 2.6.x 
here at Stanford.   One thing we have to modify is the db-components.xml 
in kernel to use c3p0 instead of dbcp.  I checked out kernel 1.x , 
modified the file, deleted everything under 
.m2/repository/org/sakaiproject/kernel, then compiled and deployed 
kernel.  I also rebuilt the entire Sakai in a clean tomcat.  I could see 
my changes in  
tomcat/components/sakai-kernel-component/WEB-INF/db-components.xml , but 
when I started tomcat it kept complaining about not finding the expected 
dbcp properties (such as:  No property 'url' found).   It seems to be 
still looking for the out of the box 1.0.7-SNAPSHOT.jar with dbcp 
somewhere.   I must be missing some other places that I needed to modify 
for my tomcat to pick up my changes.    What else do I need to do? 
    Are there any documentation on how to make local  modification to 
K1?    I couldn't find it on Confluence or the sakai-kernel google group. 

thanks,
Lydia