v2.2.13
add -f option to be backwards compatibile with old dellBiosUpdate
dont extra quote ut cflags
calculate and export current correct soname for people who want to dlopen. include smbios/dlopen.h and use the define there for the name of the library.
separate out libsmbios C++/C library ABI versioning.
Allow turning debugging output on/off at runtime via env variables.
add note about dcdbas in error message also since it sometimes is needed.
fixup soname so bins run from source tree
add beginnings of unit tests for python code.
dont get service tag because there is a reported case of this function hanging on an Opti 755. re-enable once the underlying function is fixed.