Initial TexExtract import from Hello pass
changed names
Added read_imagef matching and dummy args enumeration
Added simple sampler instruction from read_imagef and formation of used samplers array
reworked stuff to return sampler_ids + removed preserveAll
added metadata generation for image_readf instruction plus (blah! source reformatted)
added separate nmdata entry for module
added sampler_t argument setting to func calls + removed bug on adding Values to usedSamplers
updated header
s/1/SAMPLER_ARG_NUMBER