maint: avoid doubled name in syntax check failures
maint: avoid doubled name in syntax check failures

Based on the similar gnulib commit 96ad9077.  The use of
$(_sc_search_regexp) already injects $(ME) into any output
messages, so a failure of these rules would look like this,
pre-patch:

maint.mk: maint.mk: use virStrToLong_*, not strtol variants

* cfg.mk (sc_prohibit_strncmp, sc_prohibit_strtol)
(sc_libvirt_unmarked_diagnostics): Drop redundant $(ME).

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