inttypes.h is built-in header file since MSVC 2013
inttypes.h is built-in header file since MSVC 2013

The reason is that the types defined in libgit2's inttypes.h collide with system inttypes.h
3rd party library header files may directly reference MSVC's built-in inttypes.h

Fixes #3476

mrksrm/Mingijura,yongthecoder/libgit2,jeffhostetler/public_libgit2,saurabhsuniljain/libgit2,skabel/manguse,Tousiph/Demo1,saurabhsuniljain/libgit2,joshtriplett/libgit2,leoyanggit/libgit2,yongthecoder/libgit2,mrksrm/Mingijura,skabel/manguse,joshtriplett/libgit2,mrksrm/Mingijura,mrksrm/Mingijura,stewid/libgit2,skabel/manguse,leoyanggit/libgit2,skabel/manguse,Tousiph/Demo1,joshtriplett/libgit2,magnus98/TEST,leoyanggit/libgit2,magnus98/TEST,KTXSoftware/libgit2,stewid/libgit2,KTXSoftware/libgit2,Tousiph/Demo1,Corillian/libgit2,Corillian/libgit2,jeffhostetler/public_libgit2,KTXSoftware/libgit2,leoyanggit/libgit2,yongthecoder/libgit2,saurabhsuniljain/libgit2,KTXSoftware/libgit2,Tousiph/Demo1,yongthecoder/libgit2,Corillian/libgit2,saurabhsuniljain/libgit2,saurabhsuniljain/libgit2,Corillian/libgit2,skabel/manguse,jeffhostetler/public_libgit2,magnus98/TEST,mrksrm/Mingijura,Corillian/libgit2,leoyanggit/libgit2,jeffhostetler/public_libgit2,stewid/libgit2,stewid/libgit2,jeffhostetler/public_libgit2,magnus98/TEST,mrksrm/Mingijura,Corillian/libgit2,Tousiph/Demo1,jeffhostetler/public_libgit2,magnus98/TEST,leoyanggit/libgit2,Tousiph/Demo1,joshtriplett/libgit2,yongthecoder/libgit2,KTXSoftware/libgit2,magnus98/TEST,stewid/libgit2,saurabhsuniljain/libgit2,stewid/libgit2,KTXSoftware/libgit2,yongthecoder/libgit2,skabel/manguse,joshtriplett/libgit2,joshtriplett/libgit2