add latest gcc

shared-userspace.yaml

@@ -456,19 +456,19 @@ data:
                 buildorder: 5
             llvm:
                 rationale: Requirement for mesa.
-                ref: 72f153b141a1976405a215349f33b4b26d879912
+                ref: f26
                 buildorder: 6
             compiler-rt:
                 rationale: Requirement for clang.
-                ref: 2ff9f55e3d67c9272322275662de3a8f2f30bad0
+                ref: f26
                 buildorder: 7
             clang:
                 rationale: Requirement for mesa.
-                ref: 9325cf524003c954cce4e278bc2d44c171179848
+                ref: f26
                 buildorder: 8
             mesa:
                 rationale: Component for shared userspace - mesa-libGL.
-                ref: f6bfa3f73ef56e0dbf3457d3f81413da08ed6e43
+                ref: f26
                 buildorder: 9
             libXext:
                 rationale: Requirement for mesa-libGL.
@@ -523,6 +523,10 @@ data:
             #                rationale: Component for shared userspace - motif.
             #                ref: f26
             #                buildorder: 12
+            gcc:
+                rationale: temporary update for bootstrap gcc.
+                ref: f26
+                buildorder: 2
             libXft:
                 rationale: Requirement for motif.
                 ref: f26