FreeType: Fixed documentation typo.
FreeType: Stricter type checking for Face::create().

The font filename is a narrow string, and the face number
must not be negative.
TURBO2-711: Fix URI path combining for empty base URI path.
Now compiles with the bytecode interpreter
Removed a significant amount of warnings

(about 20 lines per file) by not generating 8bit op 8bit -> 32bit overflow macros.
They are not used, anyway
Added const to master_file_location.
Added void to zero argument functions.
Corrected init_rs and free_rs arguments.
Added void to zero argument functions.
Added testcase