SIMILAN: rename .p4a.c into .c and fix function renaming for Cuda and OpenCl.

Former-commit-id: e2495b5d2f1995b768cec7cce681b7787b21e4af
SIMILAN: several fixes

don't use astrad stubs when used from spear

give the possibility to only provide the C99 kernel.


Former-commit-id: 4c93f99300b785ce5bc9031105f96d1b42cd8051
Merge branch 'p4a-own' of ssh://git.hpc-project.com/par4all into p4a-own


Former-commit-id: 11e95e1cda434299c729a2bf98814ee9d10c2dc7
Merge branch 'p4a-own' of ssh://git.par4all.org/git/par4all into p4a-own


Former-commit-id: 20f2904ef743c409136cf4a745c362148315c6ef