OpenJDK 11: Merging in java.lang.Integer (update bit methods)

This is part of merging upstream changes from OpenJDK 11.28. This CL
updates some APIs working with bit representation:

 * highestOneBit(int)
 * numberOfLeadingZeros(int)
 * reverse(int)
 * reverseBytes(int)

Bug: 207841289
Test: treehugger
Change-Id: Ib935d963e4ddbfb3486760118a5542b0c44e821a
1 file changed