build: Enforce spec file naming requirements
build: Enforce spec file naming requirements

configure.py will exit with an error if a spec file's name does not
match the name of the packages it produces.

Signed-off-by: Euan Harris <c3b6e83069c8e9e3af49a38fec6026be89559638@citrix.com>

djs55/planex,euanh/planex-cleanhistory,simonjbeaumont/planex,euanh/planex-cleanhistory,djs55/planex,simonjbeaumont/planex,djs55/planex,simonjbeaumont/planex,jonludlam/planex,jonludlam/planex,jonludlam/planex,euanh/planex-cleanhistory