ICU-13177 Merging NumberFormatter to trunk for ICU 60

X-SVN-Rev: 40492

diff --cc icu4c/source/test/intltest/numfmtst.cpp
Simple merge

diff --cc icu4c/source/test/testdata/numberformattestspecification.txt
Simple merge

diff --cc icu4j/build.xml
Simple merge

diff --cc icu4j/main/tests/core/src/com/ibm/icu/dev/data/numberformattestspecification.txt
Simple merge

diff --cc icu4j/main/tests/core/src/com/ibm/icu/dev/test/format/CompactDecimalFormatTest.java
Simple merge

diff --cc icu4j/main/tests/core/src/com/ibm/icu/dev/test/format/MeasureUnitTest.java
Simple merge

diff --cc icu4j/main/tests/core/src/com/ibm/icu/dev/test/format/NumberFormatDataDrivenTest.java
Simple merge

diff --cc icu4j/main/tests/core/src/com/ibm/icu/dev/test/format/NumberFormatTest.java
Simple merge