Add refactor script to replace PYTHON_EXECUTABLE with Python3_EXECUTA…

…BLE in CMake code (TriBITSPub#610)

tribits/refactoring/to-python3.sh

@@ -0,0 +1,11 @@
+#!/bin/sh
+#
+# Usage:
+#
+#   to-python3.sh <base-dir>
+#
+_SCRIPT_DIR=`echo $0 | sed "s/\(.*\)\/to-python3[.]sh/\1/g"`
+baseDir=$1
+find ${baseDir} -type f \
+  \( -name CMakeLists.txt -or -name "*.cmake" -or -name "*.cmake.in" -or -name "*.rst" \) \
+  -exec $_SCRIPT_DIR/token-replace.py -t PYTHON_EXECUTABLE -r Python3_EXECUTABLE -f {} ';'