Use explicit conda boost version for Linux.

Author: pavoljuhas

conda-recipe/meta.yaml

@@ -14,14 +14,14 @@ build:
 requirements:
   build:
     - scons
-    - boost                     # [linux]
+    - boost 1.57.0              # [linux]
     - boost 1.56.0 py27_2       # [osx]
     - gsl
     - cxxtest
     - libobjcryst <2.0
 
   run:
-    - boost                     # [linux]
+    - boost 1.57.0              # [linux]
       # When package version includes build tag, its dependencies must be
       # listed as well.  https://github.com/conda/conda-build/issues/563
     - boost 1.56.0 py27_2       # [osx]