Cleaned up comments and formatting
- Minor code formatting and comment cleanup.
Added version switcher (v1.7)
- Added function to list all DSOAL and OpenAL Soft version folders as options to install.
- Added function to detect invalid selected wrapper version.
- Moved Win32 and Win64 folders into a bin folder to maintain a consistent folder structure in earlier version so the script can copy files properly.
- Added leading 0 to the minor version for all the OpenAL Soft version folders before 1.10.622 so they're sorted properly, at the top.
- Fixed some typos.
- Minor formatting tweaks.
- Added SADIE HRTFs (except the corrupted ones: 8, 11, 19, 20) converted to OpenAL Soft-compatible format (MHR), including 44100hz and 48000hz versions, and version with inverted Y axis for each for games with flipped elevation.