Makefile.template tweak

Hi!
The diff below moves COMPILER string template and its description
to the position used in most of the ports.
OK? Comments?

Index: Makefile.template
===================================================================
RCS file: /cvs/ports/infrastructure/templates/Makefile.template,v
retrieving revision 1.81
diff -u -p -u -r1.81 Makefile.template
--- Makefile.template 31 May 2019 21:29:52 -0000 1.81
+++ Makefile.template 1 Jul 2019 06:57:07 -0000
@@ -97,7 +97,10 @@ MASTER_SITES = ???

# Dependencies
#
-#COMPILER = ???
+# For ports using C++, except in special cases you should use a compiler
+# with the same standard library as used in other ports. Remove entries
+# from the COMPILER list if they're known to not work.
+#COMPILER = base-clang ports-gcc base-gcc
#MODULES = ???
#BUILD_DEPENDS = ???
#RUN_DEPENDS = ???
@@ -108,11 +111,6 @@ MASTER_SITES = ???
#MAKE_ENV = ???
#FAKE_FLAGS = ???
#TEST_FLAGS = ???
-
-# For ports using C++, except in special cases you should use a compiler
-# with the same standard library as used in other ports. Remove entries
-# from the COMPILER list if they're known to not work.
-#COMPILER = base-clang ports-gcc base-gcc

# build/configuration variables
#