Cannot handle files that are not on a pdrive properly

[dedmen]

https://github.com/dedmen/ArmaScriptCompiler/blob/master/src/main.cpp#L54

root_path is drive letter root, works fine for p-drive, doesn't work fine for not p-drive
example, compile directory
O:\dev\CBA_A3

for O:\dev\CBA_A3\addons\xeh\test
The virtual path should be assembled from pboprefix, and relative path

iterate up directory structure till first pboprefix
x\cba\addons\xeh

pathRelative = path.lexically_relative(directory of pboprefix file);
->
pathRelative = /test

virtual path -> prefix/pathRelative -> x\cba\addons\xeh/test

[dedmen]

std::ifstream prefixFile(i->path());
std::string prefix;
std::getline(prefixFile, prefix);
prefixFile.close();