FileLowerCaseExtension

Make lower case the extensions of all files in a specific folder. I wrote this program because the JPG and MOV files that I import from my camera have the extensions in capital and I find it annoying.
A couple of other features have been added as well.
This program is for Linux 64 bit, written with Qt Creator C++ and the Qt Library.

I ported this project to Linux. I have tested it with Kubuntu. It is 64 bit. I compiled with Qt Creator. The MFC parts have been replaced with Qt. Best of all, I provide the source code and ALSO THE EXECUTABLE FOR LINUX!
-Tested with Kubuntu 18.04, 20.10, 21.04
-Tested with OpenSUSE Tumbleweed
-Tested with Ubuntu 20.04
-Tested with Linux Mint 20.1 (XFCE interface)