Merge branch 'efabless'

Merging work related to moving the sky130 repository
references from github/google to github/efabless, with
numerous fixes and updates of the repositories themselves.
The fixes and patches that were applied to the efabless
repository versions have been removed from open_pdks.
diff --git a/gf180mcu/gf180mcu.json b/gf180mcu/gf180mcu.json
index 9fa6953..cb7d71a 100644
--- a/gf180mcu/gf180mcu.json
+++ b/gf180mcu/gf180mcu.json
@@ -89,8 +89,9 @@
         "magic": "MAGIC_COMMIT"
     },
     "reference": {
-        "open_pdks": "05fda41fac52b44772d1b8467b1c184fdc7aa7c4",
-        "magic": "7794b1b3cb5cbe6ab966e97ea27013e59f543272",
+        "open_pdks": "3607aec4e558da5f060623e9e62ba10d094b5a5e",
+        "magic": "8b3bb1ae771da1673ac148987466ff31c63513cd",
+        "gf180mcu_pdk": "a897aa30369d3bcec87d9d50ce9b01f320f854ef",
         "gf180mcu_fd_pr": "7e276a7c9c20c113d37e43ad6bfc1825b9613d7b",
         "gf180mcu_fd_pv": "bc0385ef83280999f7fc332512d91ca73008f701",
         "gf180mcu_fd_io": "2aeec51ea2824b6cc0b396acfc39f4535f40b23a",
diff --git a/sky130/sky130.json b/sky130/sky130.json
index 489b0e5..e61f532 100644
--- a/sky130/sky130.json
+++ b/sky130/sky130.json
@@ -94,7 +94,7 @@
     },
     "reference": {
         "open_pdks": "05fda41fac52b44772d1b8467b1c184fdc7aa7c4",
-        "magic": "7794b1b3cb5cbe6ab966e97ea27013e59f543272",
+        "magic": "8b3bb1ae771da1673ac148987466ff31c63513cd",
         "sky130_fd_pr": "7e2bb61f58345c203b693b2fcc178896965616d7",
         "sky130_fd_io": "2b8ce839a273734b2b1ec51b632c948f31814eb5",
         "sky130_fd_sc_hs": "51e41a54135f6f345f415f1f7a19c59a4d363c23",
@@ -110,8 +110,8 @@
         "sky130_sram_macros": "c2333394e0b0b9d9d71185678a8d8087715d5e3b",
         "sky130_fd_bd_sram": "be33adbcf188fdeab5c061699847d9d440f7a084",
         "sky130_ml_xx_hd": "6eb3b0718552b034f1bf1870285ff135e3fb2dcb",
-        "xschem_sky130": "5f818f03969e91a71529cddf4cd930c8a2c97ac6",
+        "xschem_sky130": "8fee6119d3cb1eab1da1406d033d6a870ca9f6c4",
         "klayout_sky130": "5e6e2b29d2b9f8d0f2de1b5d5f649f33017dac75",
-        "precheck_sky130": "22568499b792afbd6f962decf3d8e6c1184dfb1e"
+        "precheck_sky130": "2a975ce36453fd4fe734f32b3a9bbc512c4e2347"
     }
 }