CONFIG: new scotch version (6.0.6). Update clang minor versions.

etc/config.csh/compiler

@@ -88,10 +88,10 @@ case ThirdParty:
         set clang_version=llvm-4.0.1
         breaksw
     case Clang50:
-        set clang_version=llvm-5.0.1
+        set clang_version=llvm-5.0.2
         breaksw
     case Clang60:
-        set clang_version=llvm-6.0.0
+        set clang_version=llvm-6.0.1
         breaksw
     default:
         /bin/cat << UNKNOWN_COMPILER

etc/config.sh/compiler

@@ -85,10 +85,10 @@ ThirdParty)
         clang_version=llvm-4.0.1
         ;;
     Clang50)
-        clang_version=llvm-5.0.1
+        clang_version=llvm-5.0.2
         ;;
     Clang60)
-        clang_version=llvm-6.0.0
+        clang_version=llvm-6.0.1
         ;;
     *)
         /bin/cat << UNKNOWN_COMPILER 1>&2

etc/config.sh/scotch

@@ -31,7 +31,7 @@
 #------------------------------------------------------------------------------
 # USER EDITABLE PART: Changes made here may be lost with the next upgrade
 
-SCOTCH_VERSION=scotch_6.0.3
+SCOTCH_VERSION=scotch_6.0.6
 export SCOTCH_ARCH_PATH=$WM_THIRD_PARTY_DIR/platforms/$WM_ARCH$WM_COMPILER$WM_PRECISION_OPTION$WM_LABEL_OPTION/$SCOTCH_VERSION
 
 # END OF (NORMAL) USER EDITABLE PART