[Integrated] RFR: Fix gradlew on Cygwin

[Erik Helin]

Changeset: 00791341
Author:    Erik Helin <ehelin at openjdk.org>
Date:      2019-10-10 13:10:57 +0000
URL:       https://git.openjdk.java.net/skara/commit/00791341

Fix gradlew on Cygwin

Reviewed-by: rwestberg

! gradlew