ARROW-4414: [C++] Stop using cmake COMMAND_EXPAND_LISTS because it br…

…eaks package builds for older distros

COMMAND_EXPAND_LISTS option of add_custom_command is too new on Ubuntu Xenial and Debian stretch. It's available since CMake 3.8

Linux package builds: [kszucs/crossbow/build-434](https://github.com/kszucs/crossbow/branches/all?utf8=%E2%9C%93&query=434) (the xenial crossbow error is unrelated)

Author: Krisztián Szűcs <szucs.krisztian@gmail.com>

Closes #3522 from kszucs/ARROW-4414 and squashes the following commits:

23dde8a <Krisztián Szűcs> revert removing cmake from conda_env_cpp
ca52b30 <Krisztián Szűcs> use system cmake on travis and in docker images; remove cmake_expand_lists

ci/travis_script_python.sh

@@ -48,7 +48,6 @@ fi
 conda create -y -q -p $CONDA_ENV_DIR \
       --file $TRAVIS_BUILD_DIR/ci/conda_env_python.yml \
       nomkl \
-      cmake \
       pip \
       numpy=1.14 \
       python=${PYTHON_VERSION} \

cpp/src/gandiva/precompiled/CMakeLists.txt

@@ -44,8 +44,7 @@ foreach(SRC_FILE ${PRECOMPILED_SRCS})
             -O3 -c ${ABSOLUTE_SRC} -o ${BC_FILE}
             ${ARROW_GANDIVA_PC_CXX_FLAGS}
             -I${CMAKE_SOURCE_DIR}/src
-    DEPENDS ${SRC_FILE}
-    COMMAND_EXPAND_LISTS)
+    DEPENDS ${SRC_FILE})
   list(APPEND BC_FILES ${BC_FILE})
 endforeach()