Fixes for S60 5th platform.
Also changed default config for S60 3rd and 5th to use Open Signed.
[sockman]
protocols= winsocktcp,winsockudp,tcp,udp,ip
[winsocktcp]
filename= winsock.prt
index= 1
[winsockudp]
filename= winsock.prt
index= 2
[tcp]
filename= winsock.prt
index= 3
[udp]
filename= winsock.prt
index= 4
[ip]
filename= winsock.prt
index= 5