compiler: extend command options

[chqrlie]

• rename parse_opts and parse_long_opts arguments for clarity
• add string_list.List methods: addStr() and del()
• made Recipe.addTarget() public
• compiler: accept multiple targets or filenames on command line

[bvdberg]

I dont mind the renaming of comp_opts and alowing multiple targets/files, but i do mind the needless shuffling of code at the start of main(). There is no need for that.

[chqrlie]

I dont mind the renaming of comp_opts and alowing multiple targets/files, but i do mind the needless shuffling of code at the start of main(). There is no need for that.

I did not do this without purpose: I had to move the parsing past the creation of the auxPool so the file string lists can be allocated froim this pool, and I kept the other object definitions together...

[bvdberg]

I looked at the patch again, and I really dont like the multiple files support. It's just a step in exactly the wrong direction in my opinion. Then next step is naming the output file and enabling/disabling all the warnings through cmdline options. This is exactly what i wanted to get away from.