7.4:Crypto: Fix AutoDoc markup for the compat hashes.

Use the feature that the AutoDoc extractor now knows about
_module_value to get the classes documented as such (and
not as modules).

lib/7.4/modules/Crypto.pmod/md2.pmod

 #pike 7.5
 
+#if constant(Nettle.MD2)
+inherit Nettle.MD2;
+
 //! This is the Pike 7.4 compatibility implementation of the MD2 hash algorithm.
 //!
 //! @deprecated Crypto.MD2
+class _module_value {
 
-#if constant(Nettle.MD2)
   //! @ignore
-inherit Nettle.MD2;
-
-constant _module_value = class {
   inherit MD2::State;
   //! @endignore
 
@@ -23,8 +23,5 @@ constant _module_value = class {
 
   //!
   string name() { return "MD2"; }
-
-    //! @ignore
-  };
-//! @endignore
+}
 #endif

lib/7.4/modules/Crypto.pmod/md4.pmod

 #pike 7.5
 
+#if constant(Nettle.MD4)
+inherit Nettle.MD4;
+
 //! This is the Pike 7.4 compatibility implementation of the MD4 hash algorithm.
 //!
 //! @deprecated Crypto.MD4
+class _module_value {
 
-#if constant(Nettle.MD4)
   //! @ignore
-inherit Nettle.MD4;
-
-constant _module_value = class {
   inherit MD4::State;
   //! @endignore
 
@@ -23,8 +23,5 @@ constant _module_value = class {
 
   //!
   string name() { return "MD4"; }
-
-    //! @ignore
-  };
-//! @endignore
+}
 #endif

lib/7.4/modules/Crypto.pmod/md5.pmod

 #pike 7.5
 
+#if constant(Nettle.MD5)
+inherit Nettle.MD5;
+
 //! This is the Pike 7.4 compatibility implementation of the MD5 hash algorithm.
 //!
 //! @deprecated Crypto.MD5
+class _module_value {
 
-#if constant(Nettle.MD5)
   //! @ignore
-inherit Nettle.MD5;
-
-constant _module_value = class {
   inherit MD5::State;
   //! @endignore
 
@@ -23,8 +23,5 @@ constant _module_value = class {
 
   //!
   string name() { return "MD5"; }
-
-    //! @ignore
-  };
-//! @endignore
+}
 #endif

lib/7.4/modules/Crypto.pmod/sha.pmod

 #pike 7.5
 
+#if constant(Nettle.SHA1)
+inherit Nettle.SHA1;
+
 //! This is the Pike 7.4 compatibility implementation of
 //! the SHA1 hash algorithm.
 //!
 //! @deprecated Crypto.SHA1
+class _module_value {
 
-#if constant(Nettle.SHA1)
   //! @ignore
-inherit Nettle.SHA1;
-
-constant _module_value = class {
   inherit SHA1::State;
   //! @endignore
 
@@ -20,8 +20,5 @@ constant _module_value = class {
 
   //!
   string name() { return "SHA"; }
-
-    //! @ignore
-  };
-//! @endignore
+}
 #endif