IDE included libraries

Hi

Small suggestion for future versions of IDEs:
It should include all basic libraries, at the moment I noticed that there are missing (at least some) AVR library files like io.h and some others and I must find and download these files separately somewhere from internet. May be I overlooked something but searching these files from arduino installation folder I didn't found them.

Right now I'am using Arduino 1.5.6-r2 BETA Windows version of IDE.

You should not need to download files like io.h. This file should be included from here by the compiler.

arduino-1.5.6-r2/hardware/tools/avr/avr/include/avr

hmm, weird, IDE didn't found it itself, should I show these files locations manually to IDE where they are?

You realize it should be #include <avr/io.h>

yes, I know

Well, post an example of a non-working sketch or library, or we're all just guessing.
Note that the arduino IDE will normally include io.h for you in .ino sketch files, so you don't even need to #include it yourself.