Added GOST R 3411-94 and 3411-12 hashing algos

Example of enabling Stribog-256 to calculate file hashes:
%_build_file_digest_algo 99
%_build_source_file_digest_algo 99

98 - GOST R 3411-94 (256 bit)
99 - GOST R 3411-12, Stribog-256
100 - GOST R 3411-12, Stribog-512

To verify hashes use:
rpm -qp --dump ./package.rpm

Known issue:
https://github.com/gost-engine/engine/issues/189

rpm.spec

@@ -1,4 +1,4 @@
-%define commit e2dedc4888e0cc3a8f800085bf3f0bf954fd5f45
+%define commit 5bf4d7c6391be2408e59680999d8a83fb279d64a
 %define short_commit %(echo %{commit} | head -c 4)
 # When updating, change commit hash above to the commit in
 # https://abf.io/soft/rpm5 that you want to build from
@@ -65,7 +65,7 @@ Summary:	The RPM package management system
 Name:		rpm
 Epoch:		1
 Version:	%{libver}.%{minorver}
-Release:	102.git%{short_commit}
+Release:	104.git%{short_commit}
 License:	LGPLv2.1+
 Group:		System/Configuration/Packaging
 Url:		http://rpm5.org/
@@ -90,6 +90,7 @@ BuildRequires:	automake >= 1.8
 BuildRequires:	elfutils-devel
 BuildRequires:	sed >= 4.0.3
 BuildRequires:	beecrypt-devel >= 4.2.1-8
+BuildRequires:	pkgconfig(libgcrypt)
 BuildRequires:	ed
 BuildRequires:	gettext-devel
 BuildRequires:	byacc
@@ -667,6 +668,7 @@ tar -zxf %{SOURCE3} -C cpu-os-macros
 		--with-path-magic=%{_datadir}/misc/magic.mgc \
 		--with-beecrypt=external \
 		--with-usecrypto=beecrypt \
+		--with-gcrypt=external \
 		--with-keyutils=external \
 		--with-neon=external \
 		--with-acl \