UP-4728:  Invoke the 'gradlew.bat' properly on windowws family oses with Ant <exec>
UP-4728:  Invoke the 'gradlew.bat' properly on windowws family oses with Ant <exec>

GIP-RECIA/esup-uportal,jonathanmtran/uPortal,GIP-RECIA/esup-uportal,jl1955/uPortal5,jhelmer-unicon/uPortal,groybal/uPortal,GIP-RECIA/esup-uportal,bjagg/uPortal,bjagg/uPortal,jhelmer-unicon/uPortal,Jasig/uPortal-start,ChristianMurphy/uPortal,jonathanmtran/uPortal,jl1955/uPortal5,Jasig/uPortal-start,bjagg/uPortal,phillips1021/uPortal,Jasig/uPortal,Jasig/uPortal,jl1955/uPortal5,groybal/uPortal,jonathanmtran/uPortal,stalele/uPortal,GIP-RECIA/esco-portail,phillips1021/uPortal,groybal/uPortal,cousquer/uPortal,groybal/uPortal,stalele/uPortal,jhelmer-unicon/uPortal,phillips1021/uPortal,ChristianMurphy/uPortal,groybal/uPortal,jhelmer-unicon/uPortal,stalele/uPortal,mgillian/uPortal,GIP-RECIA/esup-uportal,ChristianMurphy/uPortal,GIP-RECIA/esco-portail,jl1955/uPortal5,phillips1021/uPortal,mgillian/uPortal,jhelmer-unicon/uPortal,mgillian/uPortal,GIP-RECIA/esco-portail,cousquer/uPortal,phillips1021/uPortal,Jasig/uPortal,GIP-RECIA/esup-uportal,jl1955/uPortal5,stalele/uPortal,cousquer/uPortal,stalele/uPortal