CHAR_INFO has 4 bits for ConsoleColor. On Linux, ConsoleColor is sometimes -1 (unknown),
which is a 17th possible value for ConsoleColor, which can't be represented in CHAR_INFO.
To fix this, I've introduced a bigger type that gets converted to CHAR_INFO when necessary.
The -Qualifier code for Split-Path made some incorrect assumptions:
* That a path only referred to the file system
* That drives cannot be used on Unix systems
These assumptions were both wrong, so I've reverted the change so we
do not have any Unix specific code in Split-Path now.
Fixes#1176
Jason Shirk