Update to xpdf 4.05 source

[ReMiOS]

I've managed to update the xpdf source to 4.05 without issues.
Extracting text seems to work, but more tests are needed to confirm everything works as supposed.

Changed aconf.h from default file generated when building:
#define MULTITHREADED 1->0
#define HAVE_SPLASH 1->0

Noted i did not have to change the FSEEK options:
#define HAVE_FSEEKO 0
#define HAVE_FSEEK64 0
#define HAVE_FSEEKI64 1

[Bladieblah]

Nice! I'll try to have a look this month