Changed format to 'pdbx' for consistency within the test framework. Added...

Changed format to 'pdbx' for consistency within the test framework. Added 'cif' to CMakeLists.txt for correctness for the future

wrappers/python/CMakeLists.txt

@@ -55,6 +55,7 @@ foreach(SUBDIR ${SUBDIRS})
         "${CMAKE_CURRENT_SOURCE_DIR}/${SUBDIR}/*.xml"
         "${CMAKE_CURRENT_SOURCE_DIR}/${SUBDIR}/*.pdb"
         "${CMAKE_CURRENT_SOURCE_DIR}/${SUBDIR}/*.pdbx"
+        "${CMAKE_CURRENT_SOURCE_DIR}/${SUBDIR}/*.cif"
         "${CMAKE_CURRENT_SOURCE_DIR}/${SUBDIR}/*.prmtop"
         "${CMAKE_CURRENT_SOURCE_DIR}/${SUBDIR}/*.prm"
         "${CMAKE_CURRENT_SOURCE_DIR}/${SUBDIR}/*.inpcrd"