Don't cast away const qualifiers when accessing const data (e.g. section
data). This fixes the warnings such as the following when compiling with
GCC and the -Wcast-qual flag set:
warning: cast from type ‘const char*’ to type ‘ELFIO::Elf_Word* {aka unsigned int*}’ casts away qualifiers [-Wcast-qual]
Fix segment header position when no segments are present
Dumper - dynamic section output added
Dynamic section reader tests are added
Signed-off-by: Serge Lamikhov-Center <to_serge@users.sourceforge.net>