Optimize "invisible" whitespace

[Lthere]

Simple replacements have been made in order to understand the benefits. The idea is to optimize whitespace while retaining all code readability.

Numbers assume that Sizzle removal (bug #1038928) has already took place, as it is a relevant piece of the library which was already optimized ("aggressively": newlines and such were removed, variable names optimized, etc.).

So here are the results:
1. Rework two spaces for tab character: 7% improvement (!)
2. EOL changed to Unix: 3% improvement

We see here that the two together lead to a library size improvement of about 10% without any special readability loss, so it's quite low-hanging fruit.

I'm hoping to get my hands on this soon so comments are welcome (that is, are there any good arguments against this optimization? positive feedback also appreciated).

[Fenring (leunen-d)]

Absolutely no objection.

Thanks for your great work Helder !