Fixes byte mismatches

\r\n bytes (0x0a, 0x0d) were being omitted from being written because of a missing +b flag in fopen for the merged file.

C++ Version

• Rewrote pkg-merge in C++
• Fixed bug with ordering of PKG files (part 10 would be merged before part 2, etc)
• Added percentage of bytes merged

pkg-merge 1.0.0

initial release