TheGreatEscape.c, Types.h: w04 and b06 are a tinypos_t; change to ‘p04’.
TheGreatEscape.c: Use vischar_BYTE13_BIT7 in preference to 0x80.
platform/generic/Makefile: Locate TOP via GNU make builtin MAKEFILE_LIST, rather than relying on the CWD.

Required for TeamCity build.