The netsurf core no longer uses any locale dependant operations
excepting the mall number or cases where such operations are
explicitly wanted.
the netsurf_init now calls setlocale with the empty string and lets
the c library setup as per its specific implementation.
any core functionality that specificaly processes ascii text must use
the utils/ascii.h header to do so.
This rationalises the path construction and basename file
operations. The default implementation is POSIX which works for all
frontends except windows, riscos and amiga which have differeing path
separators and rules.
These implementations are significantly more robust than the previous
nine implementations and also do not use unsafe strncpy or buffers
with arbitrary length limits.
These implementations also carry full documentation comments.
