add 'uncrustify' rule to Makefile.am

[illwieckz]

uncrustify made easy: use make uncrustify (configure must be run before).

an extra commit ships two previously missed format issues in qstat.h, fixed by uncrustify, this way future uncrustify run will not include them in unrelated commits.

[stevenh]

Closing due to feedback timeout, feel free to reopen