Create sha256 and sha512 modules and move files into gl/.

* bootstrap.conf (gnulib_modules): Add sha256 and sha512.
* m4/prereq.m4: Don't require gl_SHA256 or gl_SHA512.
* gl/modules/sha512: New file.
* gl/modules/sha256: New file.
* m4/sha256.m4: Move to ...
* gl/m4/sha256.m4: ...here, removing use of AC_SOURCES.
* m4/sha512.m4: Move to ...
* gl/m4/sha512.m4: ...here, removing use of AC_SOURCES.
* lib/sha256.c, lib/sha256.h: Move to ...
* gl/lib/sha256.c, gl/lib/sha256.h: ...here.
* lib/sha512.c, lib/sha512.h: Move to ...
* gl/lib/sha512.c, gl/lib/sha512.h: ...here.
* lib/u64.h: Move to ...
* gl/lib/u64.h: ...here.

2 files changed, 49 insertions, 0 deletions

diff --git a/gl/modules/sha256 b/gl/modules/sha256
new file mode 100644
index 000000000..3d70c4aab
--- /dev/null
+++ b/gl/modules/sha256
@@ -0,0 +1,24 @@
+Description:
+Compute SHA224 and SHA256 checksums.
+
+Files:
+lib/sha256.h
+lib/sha256.c
+m4/sha256.m4
+
+Depends-on:
+stdint
+
+configure.ac:
+gl_SHA256
+
+Makefile.am:
+
+Include:
+"sha256.h"
+
+License:
+LGPLv2+
+
+Maintainer:
+Jim Meyering
diff --git a/gl/modules/sha512 b/gl/modules/sha512
new file mode 100644
index 000000000..d1236f32a
--- /dev/null
+++ b/gl/modules/sha512
@@ -0,0 +1,25 @@
+Description:
+Compute SHA384 and SHA512 checksums.
+
+Files:
+lib/sha512.h
+lib/sha512.c
+m4/sha512.m4
+lib/u64.h
+
+Depends-on:
+stdint
+
+configure.ac:
+gl_SHA512
+
+Makefile.am:
+
+Include:
+"sha512.h"
+
+License:
+LGPLv2+
+
+Maintainer:
+Jim Meyering