simple fuzzing of decode functions
defensive parsing of user-defined data

fuzz only basic types
refactored and splitted fuzz buffer tests
removing warning
Merge pull request #56 from uleon/master

Sketch of solution to #54
Merge branch 'master' of github.com:acplt/open62541

Conflicts:
	src/ua_basictypes.c
add indent.sh tool. rename tools folder.
Require libexpat in ./configure
Merge remote-tracking branch 'upstream/master'