Inno Setup 5.1.14

* Updated the LZMA SDK compression code to version 4.49. This version adds
support for multi-threading, which can speed up the compression process by
50% or more on systems with multiple processor cores, and 20% or more on
systems with single-core Intel processors featuring Hyper-Threading
Technology.
* Added new CompressionThreads [Setup] section directive.
* Fix: When cleaning the output directory, the compiler would not only
delete files matching OutputBaseFilename-*.bin, but files matching
OutputBaseFilename-*-*.bin as well.