* Added new fuzzer to xpdf.
* Updated sanitizers.
* Limit sanitizer to address as this is the only one that allows us to fuzz the pdf core parser.
* Disable logging and go further into the API.
* Added xpdf project.
* Tried linking with cxx.
* Since the executables build are not needed for the fuzzer build to succeed we can ignore the case where some test-apps are not build on the oss-fuzz platform.
* Ignore errors that dont impact the fuzzers.
* Updated the project file with language field.