The Android-x86 4.4-r5 is a bugfix of the 4.4-r4 release. It addresses more hazi fonts issue of Mesa 10.5.9 found on Intel Gen5 GPUs. You are encouraged to upgrade to this release if you still encountered the hazi fonts issue.
This release contains one file. The file is bootable in devices with legacy BIOS as well as UEFI firmware.
The file can be dumped into a usb drive to get a bootable usb stick, like
dd if=android-x86-4.4-r5.iso of=/dev/sdX
where /dev/sdX is the device name of your usb drive.
Read this page for how to compile source code.