PCO Vers. 1.0.1 - Split of the low level database access

PCO Vers. 1.0.1 - Split of the low level database access
Added separate folders (itzam, sqlite, rawdb) under src, for specific database access implementations.
Default database : itzam.
Use "./configure --with-sqlite" to build using the SQLITE db. Provide implementation in src/sqlite/pers_low_level_db_access.c
based on pers_low_level_db_access_if.h
Use "./configure --with-rawdb" to build using the RAWDB db.  Provide implementation in src/rawdb/pers_low_level_db_access.c
based on pers_low_level_db_access_if.h

Change-Id: I4c32835fd1863b3d25bc35c54958905e2c535758
Signed-off-by: Petrica Manoila <petrica.manoila@continental-corporation.com>