cipher: Move sha1 context definition to a separate file.
* cipher/sha1.c: Replace hash-common.h by sha1.h. (SHA1_CONTEXT): Move to ... * cipher/sha1.h: new. Always include all flags. * cipher/Makefile.am (libcipher_la_SOURCES): Add sha1.h.
- Signed-off-by: Werner Koch <wk@gnupg.org>