modify build.gradle to match crosstest-build
added method and field signature classes for easier signature creation
Merge branch 'master' of github.com:swp-uebersetzerbau-ss13/javabite into backend-m3
Merge branch 'dev' of github.com:swp-uebersetzerbau-ss13/javabite into backend-m3

Conflicts:
	javabite-backend/src/main/java/swp_compiler_ss13/javabite/backend/classfile/Classfile.java
	javabite-backend/src/main/java/swp_compiler_ss13/javabite/backend/classfile/Code.java
	javabite-backend/src/main/java/swp_compiler_ss13/javabite/backend/translation/Program.java
	javabite-backend/src/main/java/swp_compiler_ss13/javabite/backend/translation/Translator.java