Add winhttp dependencies to pc file.
Add winhttp dependencies to pc file.

jeffhostetler/public_libgit2,magnus98/TEST,joshtriplett/libgit2,saurabhsuniljain/libgit2,magnus98/TEST,Tousiph/Demo1,stewid/libgit2,Tousiph/Demo1,Corillian/libgit2,joshtriplett/libgit2,joshtriplett/libgit2,stewid/libgit2,magnus98/TEST,leoyanggit/libgit2,jeffhostetler/public_libgit2,leoyanggit/libgit2,saurabhsuniljain/libgit2,stewid/libgit2,Corillian/libgit2,Corillian/libgit2,magnus98/TEST,leoyanggit/libgit2,Tousiph/Demo1,stewid/libgit2,leoyanggit/libgit2,joshtriplett/libgit2,saurabhsuniljain/libgit2,stewid/libgit2,joshtriplett/libgit2,Tousiph/Demo1,jeffhostetler/public_libgit2,saurabhsuniljain/libgit2,magnus98/TEST,Corillian/libgit2,stewid/libgit2,leoyanggit/libgit2,jeffhostetler/public_libgit2,Corillian/libgit2,Corillian/libgit2,jeffhostetler/public_libgit2,jeffhostetler/public_libgit2,leoyanggit/libgit2,Tousiph/Demo1,joshtriplett/libgit2,saurabhsuniljain/libgit2,magnus98/TEST,Tousiph/Demo1,saurabhsuniljain/libgit2