add cmake installation target

See merge request !6

add missing cases to lsda_type_table_entry parsing

See merge request !5

fix cmake build without elfio

See merge request !4

updated to build with use_eflio in scons by default.  removed lots of std:: qualifiers that weren't needed

Collect pointer locations and add a decode instruction method

See merge request !3

simplified interface to just return const pointers instead of shared ptrs.  no one needs ownership of anything