Changed the Makefile.in file so that it sets the "version" value in
the Magic techfile to the result of "git describe --long", so that
instead of updating the techfile version whenever I think about
changing the revision value in the Makefile, it updates automatically.

VERSION

diff --git a/VERSION b/VERSION
index 7b8d6b7..7f2b140 100644
--- a/VERSION
+++ b/VERSION
@@ -1 +1 @@
-1.0.65
+1.0.66

sky130/Makefile.in

diff --git a/sky130/Makefile.in b/sky130/Makefile.in
index 6fa0e35..78c7080 100644
--- a/sky130/Makefile.in
+++ b/sky130/Makefile.in
@@ -74,7 +74,7 @@
 SHELL = bash
 MV = mv
 
-REVISION    = 20200927
+REVISION    = `git describe --long`
 TECH        = sky130
 
 # If EF_STYLE is set to 1, then efabless naming conventions are