Introduce luft_texmap_set_wrap

We now have an explicit API for setting texture wrapping mode. One less use
case for the leaky and gross luft_texmap_set_int_param.

Signed-off-by: Casey Dahlin <cdahlin@redhat.com>
Add texmap calls to adjust min/mag filters

This was the last thing we needed texmap_set_int_param for. It can go now.

Signed-off-by: Casey Dahlin <cdahlin@redhat.com>
Remove texmap_set_int_param

No more OpenGL leaks!

Signed-off-by: Casey Dahlin <cdahlin@redhat.com>
Update TODO

Signed-off-by: Casey Dahlin <cdahlin@redhat.com>