It is introduced in http://trac.webkit.org/changeset/14359 as the part of the wx port with the following comment: "Added script to copy JavaScriptCore includes into one dir so that Framework-style includes will work on all OSes. (written by Mike Emmel)" I think this script is unnecessary long time ago, let's remove it.
Created attachment 251836 [details] Patch
Comment on attachment 251836 [details] Patch View in context: https://bugs.webkit.org/attachment.cgi?id=251836&action=review > Source/WebCore/ChangeLog:7 > + Please add a remark on the reason for the removal of script move-js-headers.sh. Maybe something of the form: The script move-js-headers.sh was only used by the Wx port, which has been long since removed from trunk.
Committed r183742: <http://trac.webkit.org/changeset/183742>