bug 1031241 pt 1 - Rename Get{Min,Pref}Width to Get{Min,Pref}ISize throughout layout. r=dbaron,smontagu
bug 1031241 pt 2 - More renaming, e.g. where {Min,Pref}Width occurs within longer type and function names. r=smontagu
bug 1031241 pt 3 - Also rename Intrinsic{Width,Height} to Intrinsic{I,B}Size. r=smontagu
bug 1031241 pt 4 - Rename the {MIN,PREF}_WIDTH constants used to identify the type of intrinsic inline-size. r=smontagu