Converts a relative path to an absolute path.
p = path.getabsolute("path", "relativeTo")
path is the relative path to be converted. It does not need to actually exist on the file system.
If provided, relativeTo specifies an absolute path from which path is considered relative. If not specified, the current working directory will be used.
A new absolute path, calculated from the current working directory, or the relativeTo parameter if provided.
Premake 4.0 or later. The relativeTo parameter is available in Premake 5.0 or later.