Miscallaneous code style fixes.

Conflicts:
	src/org/sosy_lab/cpachecker/util/ImmutableMapMerger.java
	src/org/sosy_lab/cpachecker/util/rationals/ExtendedRational.java

git-svn-id: https://svn.sosy-lab.org/software/cpachecker/trunk@13352 4712c6d2-40bb-43ae-aa4b-fec3f1bdfe4c