Add strict equalities in src/core/annotation.js
Add strict equalities in src/core/arithmetic_decoder.js
Add strict equalities in src/core/bidi.js
Add strict equalities in src/core/colorspace.js
Add strict equalities in src/core/core.js
Add strict equalities in src/core/evaluator.js
Merge pull request #5116 from Snuffleupagus/strict-equalities-src-core

Add strict equalities in src/core/* (part 1)