build: use correct printf types for uid/gid
build: use correct printf types for uid/gid

Fixes a build failure on cygwin:
cc1: warnings being treated as errors
security/security_dac.c: In function 'virSecurityDACSetProcessLabel':
security/security_dac.c:862:5: error: format '%u' expects type 'unsigned int', but argument 7 has type 'uid_t' [-Wformat]
security/security_dac.c:862:5: error: format '%u' expects type 'unsigned int', but argument 8 has type 'gid_t' [-Wformat]

* src/security/security_dac.c (virSecurityDACSetProcessLabel)
(virSecurityDACGenLabel): Use proper casts.

libvirt/libvirt,libvirt/libvirt,trainstack/libvirt,zippy2/libvirt,jfehlig/libvirt,jfehlig/libvirt,datto/libvirt,fabianfreyer/libvirt,cbosdo/libvirt,jeckersb/libvirt,datto/libvirt,VenkatDatta/libvirt,olafhering/libvirt,cbosdo/libvirt,elmarco/libvirt,rlaager/libvirt,shugaoye/libvirt,shugaoye/libvirt,VenkatDatta/libvirt,jeckersb/libvirt,emaste/libvirt,cbosdo/libvirt,nertpinx/libvirt,jfehlig/libvirt,fabianfreyer/libvirt,rlaager/libvirt,zippy2/libvirt,iam-TJ/libvirt,eskultety/libvirt,fabianfreyer/libvirt,jardasgit/libvirt,taget/libvirt,jardasgit/libvirt,bjzhang/libvirt,siboulet/libvirt-openvz,andreabolognani/libvirt,rlaager/libvirt,iam-TJ/libvirt,andreabolognani/libvirt,olafhering/libvirt,iam-TJ/libvirt,libvirt/libvirt,jardasgit/libvirt,jardasgit/libvirt,eskultety/libvirt,crobinso/libvirt,jardasgit/libvirt,rlaager/libvirt,elmarco/libvirt,trainstack/libvirt,taget/libvirt,cbosdo/libvirt,eskultety/libvirt,andreabolognani/libvirt,crobinso/libvirt,fabianfreyer/libvirt,VenkatDatta/libvirt,crobinso/libvirt,jeckersb/libvirt,elmarco/libvirt,agx/libvirt,agx/libvirt,jeckersb/libvirt,zhlcindy/libvirt-1.1.4-maintain,novel/fbsd-libvirt,nertpinx/libvirt,siboulet/libvirt-openvz,agx/libvirt,zhlcindy/libvirt-1.1.4-maintain,trainstack/libvirt,datto/libvirt,taget/libvirt,crobinso/libvirt,olafhering/libvirt,fabianfreyer/libvirt,eskultety/libvirt,novel/fbsd-libvirt,andreabolognani/libvirt,novel/fbsd-libvirt,elmarco/libvirt,shugaoye/libvirt,zippy2/libvirt,iam-TJ/libvirt,bjzhang/libvirt,nertpinx/libvirt,nertpinx/libvirt,elmarco/libvirt,bjzhang/libvirt,novel/fbsd-libvirt,VenkatDatta/libvirt,trainstack/libvirt,iam-TJ/libvirt,emaste/libvirt,novel/fbsd-libvirt,agx/libvirt,eskultety/libvirt,emaste/libvirt,novel/fbsd-libvirt,novel/fbsd-libvirt,libvirt/libvirt,emaste/libvirt,siboulet/libvirt-openvz,iam-TJ/libvirt,siboulet/libvirt-openvz,VenkatDatta/libvirt,nertpinx/libvirt,iam-TJ/libvirt,trainstack/libvirt,emaste/libvirt,agx/libvirt,andreabolognani/libvirt,novel/fbsd-libvirt,zippy2/libvirt,emaste/libvirt,taget/libvirt,taget/libvirt,trainstack/libvirt,rlaager/libvirt,zhlcindy/libvirt-1.1.4-maintain,zhlcindy/libvirt-1.1.4-maintain,siboulet/libvirt-openvz,jeckersb/libvirt,zhlcindy/libvirt-1.1.4-maintain,cbosdo/libvirt,olafhering/libvirt,jfehlig/libvirt,datto/libvirt,bjzhang/libvirt,shugaoye/libvirt,shugaoye/libvirt,novel/fbsd-libvirt,bjzhang/libvirt,emaste/libvirt,datto/libvirt,jeckersb/libvirt,trainstack/libvirt,jeckersb/libvirt