Add GCRYCTL_SET_ENFORCED_FIPS_FLAG command.
* doc/gcrypt.texi: Add documentation of the new command. * src/fips.c (_gcry_enforced_fips_mode): Report the enforced fips mode only when fips mode is enabled. (_gcry_set_enforced_fips_mode): New function. * src/g10lib.h: Add the _gcry_set_enforced_fips_mode prototype. * src/gcrypt.h.in: Add the GCRYCTL_SET_ENFORCED_FIPS_FLAG. * src/global.c (_gcry_vcontrol): Handle the new command.