--disable-optimize --enable-debug builds added to infra

Hi all, Bug 1341404 has landed on mozilla-inbound, bringing --disable-optimize --enable-debug builds to our infrastructure on our Tier 1 desktop platforms. Folks have complained several times this year that various changes silently broke this style of build because said style was not tested.

Reftest "fuzzy" and "fuzzy-if" annotations now take ranges

This morning I pushed bug 1252361 to inbound, which modifies the "fuzzy" and "fuzzy-if" reftest annotations to accept ranges in addition to single values for the fuzziness parameters. If a single value "x" is provided, it by default maps to the range "0..x", so it preserves the existing semantics