userspace/libsinsp/event.cpp: resize right string
userspace/libsinsp: add the ability to specify binary buffers in filters
userspace/libsinsp/filter.cpp: accept hex sequences only in second operand
Merge pull request #42 from ret2libc/filter-binary-buffer

add the ability to specify binary buffers in filters
Merge pull request #55 from pavlinux/master

fix printf format warning