fix compilation bug of init_openmp.c relating to existence of omp_num_threads and omp_get_num_threads() when compiling without OpenMP
Merge pull request #239 from kostrzewa/omp_num_threads_bug

fix compilation bug of init_openmp.c
fix bug in check of residue when using CLOVER operator
Merge pull request #241 from kostrzewa/clover_DUM_DERI_bug

fix bug in check of residue when using CLOVER operator
enable IO reread check also for LIME
Merge pull request #242 from kostrzewa/LIME_reread_check

enable IO reread check also for LIME
Merge remote branch 'etmc/master' into smearing