Example SPI loopback test working.
Small bug clean up at ssp.c
SPI tests moved to the separate directory and files.

Changes in project settings to support source subdirectories.

In the Project settings resolved problem with linking all possible
drivers in place of required only.

PCB checked with I/O connector and uC pins assignment. Some wrong
description at LPCExpresso PCB corrected.

Internal Loopback test passed.

Hardware loopback test using 2 SPI is waiting to do because the "driver"
is primitive and need update.
SPI0 and SPI1 are tested and ready to make a tag 00.01.00.
The base start point to make a tag and develpe branch for project.