Revert "Set mode to 755 on executable scripts in dev-support directory"

This reverts commit e7ac4d7141ea8eca591d473991662fea4a5eb927.
HBASE-12151 Set mode to 755 on executable scripts in dev-support directory
HBASE-10153 improve VerifyReplication to compute BADROWS more accurately (Jianwei)
HBASE-12164 Check for presence of user Id in SecureBulkLoadEndpoint#secureBulkLoadHFiles() is inaccurate
HBASE-12165 TestEndToEndSplitTransaction.testFromClientSideWhileSplitting fails -- DEBUGGING STRINGS
HBASE-11907 Use the joni byte[] regex engine in place of j.u.regex