Add complex dot product for OpenCL backend
Add complex dot product for OpenCL backend

marbre/arrayfire,arrayfire/arrayfire,mrgloom/arrayfire,mrgloom/arrayfire,ghisvail/arrayfire,hshindo/arrayfire,9prady9/arrayfire,mrgloom/arrayfire,HolyGeneralK/arrayfire,jramapuram/arrayfire,ghisvail/arrayfire,asifmadnan/arrayfire,merlin-ext/arrayfire,Keno/arrayfire,marbre/arrayfire,pentschev/arrayfire,asifmadnan/arrayfire,bkloppenborg/arrayfire,9prady9/arrayfire,asifmadnan/arrayfire,pombredanne/arrayfire,shehzan10/arrayfire,asifmadnan/arrayfire,bkloppenborg/arrayfire,pombredanne/arrayfire,pentschev/arrayfire,munnybearz/arrayfire,umar456/arrayfire,Keno/arrayfire,victorv/arrayfire,mrgloom/arrayfire,victorv/arrayfire,ghisvail/arrayfire,arrayfire/arrayfire,umar456/arrayfire,marbre/arrayfire,hshindo/arrayfire,arrayfire/arrayfire,umar456/arrayfire,9prady9/arrayfire,jramapuram/arrayfire,HolyGeneralK/arrayfire,marbre/arrayfire,munnybearz/arrayfire,linan7788626/arrayfire,merlin-ext/arrayfire,hshindo/arrayfire,bkloppenborg/arrayfire,victorv/arrayfire,shehzan10/arrayfire,HolyGeneralK/arrayfire,jramapuram/arrayfire,hshindo/arrayfire,arrayfire/arrayfire,Keno/arrayfire,pentschev/arrayfire,linan7788626/arrayfire,linan7788626/arrayfire,munnybearz/arrayfire,victorv/arrayfire,ghisvail/arrayfire,umar456/arrayfire,pombredanne/arrayfire,Keno/arrayfire,merlin-ext/arrayfire,HolyGeneralK/arrayfire,pombredanne/arrayfire,jramapuram/arrayfire,shehzan10/arrayfire,linan7788626/arrayfire,shehzan10/arrayfire,merlin-ext/arrayfire,9prady9/arrayfire,pentschev/arrayfire,bkloppenborg/arrayfire