iup-ceu: A C repository from fsantanna

Clone the ceu-iup repository into the root directory of ceu:

cd ceu/
git clone https://github.com/fsantanna/iup-ceu/ iup
cd iup/

Download and install the iup libraries:

mkdir tmp/
cd tmp/
wget https://sourceforge.net/projects/iup/files/3.31/Linux%20Libraries/iup-3.31_Linux54_64_lib.tar.gz
tar xvzf iup-3.31_Linux54_64_lib.tar.gz
sudo ./install
sudo ./install_dev
cd ..
rm -Rf tmp/

Compile and execute a test program:

export LD_LIBRARY_PATH=$LD_LIBRARY_PATH:/usr/lib64
gcc -o hello -I /usr/include/iup hello.c -l iup
./hello