2. Improved full_pe_rebuilder sample to show how to recalculate and set pe file checksum

2. Added some new functions to set/read field values from PE header
3. Added correct PE flags manipulation for relocations rebuilder and when removing relocation directory
4. Added new sample

2. Fixed export directory reader and rebuilder to work correctly with empty export directories
3. Added config directory Lock Prefix Table reader
4. Added new sample (image load config directory rebuilder)
5. Other minor bugfixes

2. Fixed adding sections to PE files with last section non-aligned
3. add_section preserves section virtual address if there's no sections in PE file
4. add_section set_number_of_sections fixed
5. rebuild_pe - added option to turn off automatical SizeOfHeaders calculation
6. rebuild_imports fixed for non-zero import data position inside of the section

Converted all samples with russian comments to UTF-8
Other small fixes

Changed samples
Removed unneeded code
Added version