Changed useless by-reference params to by-value
which forbids number literals (i.e. DT_*)

Added missing const keyword to std::string& parameter

Return back Makefile.in files. The intention is that configure/make pair will work without additional automake invocation

Fix the following two gcc warnings:

elfio/elfio_section.hpp:50:36: warning: type qualifiers ignored on function return type [-Wignored-qualifiers]
     const size_t get_stream_size() const
                                    ^
elfio/elfio_segment.hpp:99:23: warning: type qualifiers ignored on function return type [-Wignored-qualifiers]
     get_stream_size() const

Crash 7d695153fd8052529d480c2352d4ada33a44bada

Fix crash 060833f08dc14d1712428742b3cad7af17b36bb7

Fix crash b82f05b0b25c8fdc98480e6d76b6d5f9164ae2bc

Running: crash-b82f05b0b25c8fdc98480e6d76b6d5f9164ae2bc
==2850==WARNING: AddressSanitizer failed to allocate 0x400000004000001 bytes
==2850==AddressSanitizer's allocator is terminating the process instead of returning 0
==2850==If you don't like this behavior set allocator_may_return_null=1
==2850==AddressSanitizer CHECK failed: /home/alvaro/tools/llvm/llvm/projects/compiler-rt/lib/sanitizer_common/sanitizer_allocator.cc:22
1 "((0)) != (0)" (0x0, 0x0)