z3: fix build.

srcpkgs/z3/patches/ocaml.patch

@@ -0,0 +1,12 @@
+Does not use ocamlfind, so this fails on nums.cmxa.
+
+--- scripts/mk_project.py.orig
++++ scripts/mk_project.py
+@@ -101,7 +101,6 @@
+     add_c_example('maxsat')
+     add_dotnet_example('dotnet_example', 'dotnet')
+     add_java_example('java_example', 'java')
+-    add_ml_example('ml_example', 'ml')
+     add_z3py_example('py_example', 'python')
+     return API_files
+ 

srcpkgs/z3/template

@@ -1,7 +1,7 @@
 # Template file for 'z3'
 pkgname=z3
 version=4.8.5
-revision=2
+revision=3
 wrksrc="${pkgname}-Z3-${version}"
 build_style=configure
 configure_args="--prefix=/usr -g --python $(vopt_if ocaml --ml)"