feedback from vim mailing list

https://groups.google.com/d/msg/vim_dev/-4pqDJfHCsM/m7It_aymZ60J
1. async.c does not follow coding style:
1.1. each 8 indentation spaces should be replaced with a tab
1.2. each opening figure brace should be present on its own line
1.3. no (void) in function declaration
2. async.h should be split into globals.h and proto/async.pro. async.h itself is to be removed.
4. There is a proper way to disable a setting. Putting the whole setting into an #ifdef is not the one.
5. Documentation of 'ticktime' lacks references to +smth. I repeat, do not call smth async. Not until you will make it execute asynchronously.
Merge pull request #1 from Floobits/standards

Standards