Target Configuration files no longer support relative paths from the ccxml for initialization scripts.

In CCS Eclipse: When using a relative path, CCS will first search the directory of ccxml file first. If it cannot find it there, it will then search in the default <CCS INSTALL DIR>\ccs\ccs_base\common\targetdb

In CCS Theia: When using a relative path, CCS will only search in the default <CCS INSTALL DIR>\ccs\ccs_base\common\targetdb