Checked in Xiaoyang's changes to String library
Checked in Xiaoyang's changes to String library


Former-commit-id: 27b3254e99c637778c56d4bbe6e51e154edfa9d8

majenkotech/chipKIT-core,majenkotech/chipKIT-core,chipKIT32/chipkit-core,ricklon/chipKIT-core,adamwolf/chipKIT-core,UECIDE/chipKIT-core,EmbeddedMan/chipKIT-core,adamwolf/chipKIT-core,chipKIT32/chipkit-core,majenkotech/chipKIT-core,majenkotech/chipKIT-core,pontech/chipKIT-core,pontech/chipKIT-core,UECIDE/chipKIT-core,ricklon/chipKIT-core,EmbeddedMan/chipKIT-core,majenkotech/chipKIT-core,adamwolf/chipKIT-core,EmbeddedMan/chipKIT-core,chipKIT32/chipkit-core,adamwolf/chipKIT-core,chipKIT32/chipkit-core,UECIDE/chipKIT-core,pontech/chipKIT-core,UECIDE/chipKIT-core,ricklon/chipKIT-core,pontech/chipKIT-core,ricklon/chipKIT-core,EmbeddedMan/chipKIT-core,UECIDE/chipKIT-core,pontech/chipKIT-core,adamwolf/chipKIT-core,EmbeddedMan/chipKIT-core,ricklon/chipKIT-core,pontech/chipKIT-core,adamwolf/chipKIT-core,pontech/chipKIT-core,EmbeddedMan/chipKIT-core,majenkotech/chipKIT-core,adamwolf/chipKIT-core,majenkotech/chipKIT-core,EmbeddedMan/chipKIT-core,chipKIT32/chipkit-core,ricklon/chipKIT-core