c-ares version 1.7.5

Changed:

 o 

Fixed:

 o detection of semicolon comments in resolv.conf
 o avoid using system's inet_net_pton affected by the WLB-2008080064 advisory
 o replacement ares_inet_net_pton affected by the WLB-2008080064 advisory
 o replacement ares_inet_ntop affected by potential out of bounds write
 o added install target to Makefile.msvc

Thanks go to these friendly people for their efforts and contributions:

 Yang Tse

Have fun!