built-ins/Math/*: make all indentation consistent (depth & character) (#1435)

test/built-ins/Math/log/S15.8.2.10_A5.js

test/built-ins/Math/log10/Log10-specialVals.js

test/built-ins/Math/log2/log2-basicTests.js

test/built-ins/Math/max/S15.8.2.11_A1.js

test/built-ins/Math/max/S15.8.2.11_A2.js

test/built-ins/Math/max/S15.8.2.11_A4.js

test/built-ins/Math/min/S15.8.2.12_A1.js

test/built-ins/Math/min/S15.8.2.12_A2.js

test/built-ins/Math/min/S15.8.2.12_A4.js

test/built-ins/Math/pow/applying-the-exp-operator_A10.js

test/built-ins/Math/pow/applying-the-exp-operator_A11.js

test/built-ins/Math/pow/applying-the-exp-operator_A13.js

test/built-ins/Math/pow/applying-the-exp-operator_A14.js

test/built-ins/Math/pow/applying-the-exp-operator_A18.js

test/built-ins/Math/pow/applying-the-exp-operator_A2.js

test/built-ins/Math/pow/applying-the-exp-operator_A21.js

test/built-ins/Math/pow/applying-the-exp-operator_A22.js

test/built-ins/Math/pow/applying-the-exp-operator_A23.js

test/built-ins/Math/pow/applying-the-exp-operator_A3.js

test/built-ins/Math/pow/applying-the-exp-operator_A5.js