Modified DRC rule for li to allow 45 degree angles inside the SRAM core
cell.  This is sort of a moot point, given all the ways normal DRC is
violated inside the SRAM core, but whatever.

sky130/magic/sky130.tech

diff --git a/sky130/magic/sky130.tech b/sky130/magic/sky130.tech
index 3f9a189..975c3a4 100644
--- a/sky130/magic/sky130.tech
+++ b/sky130/magic/sky130.tech
@@ -5390,7 +5390,9 @@
 
  area allli,*obsli 56100 170 "Local interconnect minimum area < %a (li.6)"
 
- angles allli 90 "Only 90 degree angles permitted on local interconnect (x.2)"
+ angles *locali,rli 90 "Only 90 degree angles permitted on local interconnect (x.2)"
+ angles coreli 45 \
+	"Only 45 degree angles permitted on local interconnect in SRAM cell (x.2)"
 
 #-------------------------------------------------------------
 # MCON - Contact between local interconnect and metal1