Bigger updates in Transport infrastructure - functions renames to contain more consis...

Bigger updates in Transport infrastructure - functions renames to contain more consistent prefix oocd_transport_, source code updates that was depending on these functions. IMPORTANT: existing suspicious SWD implementation transport was renamed to OLDSWD so if you want to use old swd drivers please rename your transport to oldswd, it will be removed when transport work is finished. Updated STLINK transport as well.

Change-Id: I41a07f51c1c43e466ed78f5bada76e4d2ca3bbb8
Signed-off-by: Tomek CEDRO <cederom@tlen.pl>