RF: Change name to FSL_GE_606, in anticipation of flags for future versions

config/default.mk

-# Boolean flag which defines this FSL installation
-# as being from FSL 6.0.6 or newer (a conda-based
-# FSL installation). This flag may be used by FSL
-# Makefiles which need to preserve support for
-# older versions of FSL.
-FSL_POST_606 := true
-
 # Platform specific settings and defaults,
 # which are used by vars.mk
 include ${FSLCONFDIR}/buildSettings.mk

config/vars.mk

@@ -7,6 +7,13 @@
 # initialised in the project Makefile.
 #########################################################
 
+# Boolean flag which defines this FSL installation
+# as being from FSL 6.0.6 or newer ("GE" = greater
+# than or equal to). This flag may be used by FSL
+# Makefiles which need to preserve support for
+# older versions of FSL.
+FSL_GE_606 := true
+
 # All projects must specify a name
 PROJNAME =