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* random.c (initialize): Factored out some code to .. (initialize_basics): .. new function. (_gcry_random_initialize): Just call initialize_basics unless the new arg FULL is set to TRUE. (_gcry_fast_random_poll): Don't do anything unless the random system has been really initialized. * gcrypt.h: Added GCRYCTL_FAST_POLL. (gcry_fast_random_poll): New. * global.c (gcry_control) <INITIALIZATION_FINISHED>: Do only basic random subsystem init. (gcry_control) <FAST_POLL>: New.