Merge branch 'mnt/post-606' into 'master'

Mnt/post 606

See merge request !29

CHANGELOG.md

 # FSL base project changelog
 
 
-## 2111.1 (Fridat 12th November 2021)
+## 2111.2 (Monday 15th November 2021)
+
+* Added the `FSL_GE_606` `Makefile` flag for use by projects which need to
+  retain support for compiling against older versions of FSL.
+
+
+## 2111.1 (Friday 12th November 2021)
 
  - Tweak to how the `-install_name` option is set.
 

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 =