gnu: Add hdf-eos5.

* gnu/packages/maths.scm (hdf-eos5): New variable.
* gnu/packages/patches/hdf-eos5-build-shared.patch: New file.
* gnu/packages/patches/hdf-eos5-remove-gctp.patch: New file.
* gnu/packages/patches/hdf-eos5-fix-szip.patch: New file.
* gnu/packages/patches/hdf-eos5-fortrantests.patch: New file.
* gnu/local.mk (dist_patch_DATA): Add patches.

Signed-off-by: Ludovic Courtès <ludo@gnu.org>

gnu/packages/patches/hdf-eos5-fix-szip.patch

@@ -0,0 +1,30 @@
+Ill-placed #endif causes missing symbol errors when compiling without
+szip.  Reported to upstream maintainer.
+---
+ src/EHapi.c | 3 +--
+ 1 file changed, 1 insertion(+), 2 deletions(-)
+
+diff --git a/src/EHapi.c b/src/EHapi.c
+index 46a9b5c..208f447 100755
+--- a/src/EHapi.c
++++ b/src/EHapi.c
+@@ -11379,6 +11379,7 @@ int HE5_szip_can_encode(void )
+   return(-1);
+ }
+ 
++#endif /* H5_HAVE_FILTER_SZIP */
+ 
+ 
+ /*----------------------------------------------------------------------------|
+@@ -11509,8 +11510,6 @@ HE5_EHHEisHE5(char *filename)
+     }
+ }
+ 
+-#endif /* H5_HAVE_FILTER_SZIP */
+-
+ 
+ #ifndef __cplusplus
+ 
+-- 
+2.10.0
+