x86_64 is used as a baseline: the "x86_64" entry, whatever status it has,
is transformed into "all", and then the other entries in ARCHITECTURES
either dropped or rearranged appropriately.
- Fix gcc_syslibs dep on secondary architectures
- Remove -lstdc++ from linking commands
- Fix provide of devel package
- Make the devel package depend on devel:libncurses
- Install headers to speech_tools directory inside $includeDir
- Work around Festival's broken build system by symlinking configuration files
and makefile rules
- Remove unneeded dependency on makefile_engine