glstate: Use spaces instead of tabs for format table.

Tabular.vim rules.
glretrace: Silence glGetSynciv(GL_CONDITION_SATISFIED) bogus warnings.
os: Add abstraction for hard breakpoints.

Convenient when debugging stuff.
glstate: Be more selective when disabling debug messages.

As these are quite useful to diagnose problems in glstate module itself.
glstate: Detect whether we have core profile.

Not yet used, but bound to be useful.
glstate: Dump more images as float.