Miscellany

# make all PSP_FW_VERSION=271
psp-gcc -I/usr/local/pspdev/psp/sdk/include/libc -I. -I/usr/local/pspdev/psp/sdk/include -O2 -G0 -Wall -fno-builtin-printf -D_PSP_FW_VERSION=271   -c -o main.o main.c
main.c:496: error: conflicting types for 'command_xchg'
usbhostfs.h:368: error: previous declaration of 'command_xchg' was here
main.c:677: error: conflicting types for 'usb_connected'
usbhostfs.h:366: error: previous declaration of 'usb_connected' was here
make: *** [main.o] Error 1