Version 2.01
Version 2.02
Version 3.0
Version 3.1
Version 3.2
Version 4.0
Version 4.1
Version 4.1.1
Version 4.1.2
Version 4.1.3
Version 4.2.0
Version 4.2.1
Version 4.3.0
Version 4.3.1
Version 4.4.0
Version 4.4.1
Version 4.4.2
Version 4.4.3
Add a check for -lpthread.
Create Release and Debug directories if they are not present.

Otherwise, build fails if these directories do not exist.