[PATCH] Fix most warnings with gcc 4.4 on Linux

[Boris Dušek]

Hello,

when building the Ubuntu package for 0.7.1 Beta 2, I noticed lot of warnings in
the build log from the PPA build server. Since having warnings is not good, I
decided to fix them. I am posting a patch below that fixes most of them. Only 2
warnings remain on amd64 Ubuntu 10.04 with gcc 4.4.3:

src/server/history.c:38: warning: cast from pointer to integer of different size
- I don't understand this one at all, the code seems correct. There is no
conversion from pointer to integer visible to me at all.

src/c/api/libspeechd.c:263: warning: assignment discards qualifiers from 
pointer target type
- I don't feel like I am able to correctly solve this one in little time

Could someone please review this patch?

Best regards,
Boris Dusek