Normalized code style using astyle

[thorkill]

This PR does not change any functionality. From now on we will format the source code (at the moment only *.c files) using astyle tool.

Please note, that so many changes to the style will make your merges fail. Try to merge asap if you want to contribute.

Steps to apply before you commit to this repository:

1. Install astyle in version >= 3.1 and generate Makefile which supports styling (needed on the first run): eresi $> ./configure

2. Apply our styling guide eresi $> make astyle

or if you are on bsd: gmake astyle

3. Recompile to make sure everything is working as expected