Merge branch 'va/p4-client-path'

git p4 attempts to better handle branches in Perforce.

* va/p4-client-path:
  git-p4: improve client path detection when branches are used
  t9801: check git-p4's branch detection with client spec enabled

git-p4.py

@@ -502,12 +502,14 @@ def p4Cmd(cmd):
 def p4Where(depotPath):
     if not depotPath.endswith("/"):
         depotPath += "/"
-    depotPath = depotPath + "..."
-    outputList = p4CmdList(["where", depotPath])
+    depotPathLong = depotPath + "..."
+    outputList = p4CmdList(["where", depotPathLong])
     output = None
     for entry in outputList:
         if "depotFile" in entry:
-            if entry["depotFile"] == depotPath:
+            # Search for the base client side depot path, as long as it starts with the branch's P4 path.
+            # The base path always ends with "/...".
+            if entry["depotFile"].find(depotPath) == 0 and entry["depotFile"][-4:] == "/...":
                 output = entry
                 break
         elif "data" in entry:
@@ -1653,7 +1655,10 @@ class P4Submit(Command, P4UserMap):
         if self.useClientSpec:
             self.clientSpecDirs = getClientSpec()
 
-        if self.useClientSpec:
+        # Check for the existance of P4 branches
+        branchesDetected = (len(p4BranchesInGit().keys()) > 1)
+
+        if self.useClientSpec and not branchesDetected:
             # all files are relative to the client spec
             self.clientPath = getClientRoot()
         else: