Fix first regression introduced with r55173: need to import shutil before using methods from it

Otherwise linux buildbot fails dramatically.

That revision also leads to msvc runtime libs being removed, will fix this
in separate commit.

Take more respect for such creepy as linux and windows platforms, they're not so bad!

build_files/buildbot/slave_compile.py

@@ -21,6 +21,7 @@
 import os
 import subprocess
 import sys
+import shutil
 
 # get builder name
 if len(sys.argv) < 2:
@@ -70,8 +71,6 @@ else:
     config_dir = os.path.join(buildbot_dir, 'config')
 
     if builder.find('linux') != -1:
-        import shutil
-
         configs = []
         if builder.endswith('linux_glibc211_x86_64_scons'):
             configs = ['user-config-player-glibc211-x86_64.py',