Spurious spaces in container docs

[szhorvat]

Somehow we are ending up with spurious spaces in the container docs (e.g. vector_ copy instead of vector_copy).

[ntamas]

Probably a bug in doxrox.py that surfaced after the code reformatting done by Astyle (Astyle inserted a space after commas in macros). I'll look into this.

[ntamas]

Fixed in igraph/igraph@39fc54e

[ntamas]

Hmmm, still not okay, now there's extra whitespace after the function name. I'll take care of this as well.

[ntamas]

Fixed the problem with the extra whitespace after the function name, but there are still some minor issues; basically, the function declaration in the documentation tries to preserve the formatting of the declaration from the original .pmt file - the problem is that we are replacing the macros from the .pmt file and this messes up the alignment of the function headers. We could try reformatting the .pmt files manually, but I don't think this is a priority now; we can do it any time, even after the release.