[MERGE #3190 @obastemur] xplat: fix ICU lib tilde path problem

Merge pull request #3190 from obastemur:fix_tilde

Bash doesn't auto expand tilde on the path hence directory exists condition fails

build.sh

@@ -184,7 +184,8 @@ while [[ $# -gt 0 ]]; do
 
     --icu=*)
         ICU_PATH=$1
-        ICU_PATH="${ICU_PATH:6}"
+        # resolve tilde on path
+        eval ICU_PATH="${ICU_PATH:6}"
         if [[ ! -d ${ICU_PATH} ]]; then
             if [[ -d "${CHAKRACORE_DIR}/${ICU_PATH}" ]]; then
                 ICU_PATH="${CHAKRACORE_DIR}/${ICU_PATH}"