Merge pull request #17159 from benmaier/llvm-python27

updated llvm python dependency to ver2.7; fixed #17157

Author: vtjnash

deps/tools/find_python2

@@ -1,13 +1,13 @@
 #!/bin/sh
 #
-# LLVM requires 2.5 <= python2 < 3
+# LLVM requires 2.7 <= python2 < 3
 #
 
 valid_python() {
-    $1 -c 'import sys; sys.exit(not (sys.version_info >= (2,5) and sys.version_info < (3,0)))' 2> /dev/null
+    $1 -c 'import sys; sys.exit(not (sys.version_info >= (2,7) and sys.version_info < (3,0)))' 2> /dev/null
 }
 
-for python in python python2 python2.7 python27 python2.6 python26 python2.5 python25; do
+for python in python python2 python2.7 python27; do
     if valid_python $python; then
         echo `which $python`
         break