libXADMaster.so library for further integrations defined. Added per-index renaming. Some memory leaks fixed.

[mafiosso]

I'am announcing implementation of some nice to have features:

• Per-index entry renaming - important for broken/too long entries/etc. within an archive.
• Defined C API libXADMaster.so library for integrations within another technologies and creating bindings to it.
• Analyzed valgrind output and fixed more serious problems (not freeing entry buffer on error - led to memory cumulation). But still a few bytes are definitely lost according to Valgrind tool.
• There is little problem with universal-detector - it must be compiled with -fPIC, so forked as well temporarily now. Please review the code and tell me if the new features are interesting for you. Thanks.