gnu: Fix a few 'source-file-name' lint warnings.

* gnu/packages/firmware.scm (ath9k-htc-firmware)[source](file-name): New
field.
* gnu/packages/gnunet.scm (guile-gnunet)[source](file-name): New field.
* gnu/packages/guile.scm (guile-next)[source](file-name): New field.
(guile-minikanren)[source](file-name): New field
(guile-gdbm-ffi)[source](file-name): New field.
* gnu/packages/ssh.scm (guile-ssh)[source](file-name): New field.

gnu/packages/firmware.scm

@@ -38,6 +38,7 @@
               (sha256
                (base32
                 "16jbj8avg5jkgvq5lxm0hdxxn4c3zn7fx8b4nxllvr024apk9w23"))
+              (file-name (string-append name "-" version "-checkout"))
               (patches (list (search-patch "ath9k-htc-firmware-objcopy.patch")))))
     (build-system gnu-build-system)
     (arguments

gnu/packages/gnunet.scm

@@ -263,6 +263,7 @@ privacy-preserving, decentralized public key infrastructure.")
                 (uri (git-reference
                       (url "git://git.sv.gnu.org/guix/gnunet.git")
                       (commit commit)))
+                (file-name (string-append name "-" version "-checkout"))
                 (sha256
                  (base32
                   "0k6mn28isjlxrnvbnblab3nh2xqx1b7san8k98kc35ap9lq0iz8w"))))

gnu/packages/guile.scm

@@ -200,6 +200,7 @@ without requiring the source code to be rewritten.")
               (uri (git-reference
                     (url "git://git.sv.gnu.org/guile.git")
                     (commit "e5bccb6e5df3485152bc6501e1f36275e09c6352")))
+              (file-name (string-append name "-" version "-checkout"))
               (sha256
                (base32
                 "0z7ywryfcargrpz8hdrz6sfs06c2h2y9baqin3mbjvvg96a5bx47"))))
@@ -471,6 +472,7 @@ http:://json.org specification.  These are the main features:
               (uri (git-reference
                     (url "https://github.com/ijp/minikanren.git")
                     (commit "e844d85512f8c055d3f96143ee506007389a25e3")))
+              (file-name (string-append name "-" version "-checkout"))
               (sha256
                (base32
                 "0r50jlpzi940jlmxyy3ddqqwmj5r12gb4bcv0ssini9v8km13xz6"))))
@@ -628,6 +630,7 @@ inspired by the SCSH regular expression system.")
               (uri (git-reference
                     (url "https://github.com/ijp/guile-gdbm.git")
                     (commit "fa1d5b6231d0e4d096687b378c025f2148c5f246")))
+              (file-name (string-append name "-" version "-checkout"))
               (sha256
                (base32
                 "1j8wrsw7v9w6qkl47xz0rdikg50v16nn6kbs3lgzcymjzpa7babj"))))

gnu/packages/ssh.scm

@@ -184,6 +184,7 @@ Additionally, various channel-specific options can be negotiated.")
               (uri (git-reference
                     (url "https://github.com/artyom-poptsov/libguile-ssh.git")
                     (commit (string-append "v" version))))
+              (file-name (string-append name "-" version "-checkout"))
               (sha256
                (base32
                 "1ld2khzylaylhqfsfcvbxs95frvm8pkr7dq40ia1wwn9c349fcdv"))))