fotcorn

Build fixes for Linux

1

Some basic hacks and fixed to make it build on Ubuntu 22.04. I get this window:  The OpenGL loader stuff certainly needs a cleaner fix than what I am...

Once executed, instructions get cached forever. This is a problem with self modifying code. There is a test for that in the qemu test file in [test/qemu/test-i386.c](https://github.com/fotcorn/x86emu/blob/17a38ec31bd6d9be194d8af74d657bfe988d477d/test/qemu/test-i386.c#L2047) but its for...

* ImmediateSize::Bit32 * hardcoded get_i32_value * hardcoded read_immediate_32bit