scripted-diff: rename versionbitscache

-BEGIN VERIFY SCRIPT-
sed -i -e 's/versionbitscache/g_versionbitscache/g' $(git grep -l versionbitscache)
-END VERIFY SCRIPT-

src/deploymentstatus.cpp

@@ -7,7 +7,7 @@
 #include <consensus/params.h>
 #include <versionbits.h>
 
-VersionBitsCache versionbitscache;
+VersionBitsCache g_versionbitscache;
 
 /* Basic sanity checking for BuriedDeployment/DeploymentPos enums and
  * ValidDeployment check */