<defines>
ENTROPY_SRC_RDSEED -> 20151218
</defines>

need_isa rdseed

<header:internal>
rdseed.h
</header:internal>

<arch>
x86_32
x86_64
</arch>

<cc>
gcc:4.8
clang:3.2
icc
msvc:2013
</cc>

<defines>
ENTROPY_SRC_RDSEED -> 20151218
</defines>

need_isa rdseed

<header:internal>
rdseed.h
</header:internal>

<arch>
x86_32
x86_64
</arch>

<cc>
gcc
clang
icc
msvc
</cc>

Remove low compiler version restrictions
Remove low compiler version restrictions

All minimum compiler versions in rdseed are less or equal the minimum
compiler version for the Botan 2.x branch. Remove those explicit
restrictions to allow users with unknown cc_version to compile rdseed
