fixed match for .svn in modules/CMakeLists.txt

modules/CMakeLists.txt

 # recursively process all subdirectories
 file(GLOB ALL_FILES *)
 foreach(fname ${ALL_FILES})
-  if(NOT ${fname} MATCHES ".*.svn" 
+  if(NOT ${fname} MATCHES ".*\\.svn" 
      AND NOT ${fname} MATCHES ".*CMakeFiles" 
      AND NOT ${fname} MATCHES ".*main"
      AND NOT ${fname} MATCHES "doc")