Handle alternative log format for process start

Some phones (like my samsung) do not log the 'Start proc ...' line in
logcat to indicate process start.  In my case it does log a line like

E/dalvikvm(pid): >>>>>> com.my.package [ more stuff ]

This commit adds support for that format to pidcat.

pidcat.py

@@ -139,7 +139,8 @@ TAGTYPES = {
   'F': colorize(' F ', fg=BLACK, bg=RED),
 }
 
-PID_START = re.compile(r'^Start proc ([a-zA-Z0-9._:]+) for ([a-z]+ [^:]+): pid=(\d+) uid=(\d+) gids=(.*)$')
+PID_START = re.compile(r'^.*: Start proc ([a-zA-Z0-9._:]+) for ([a-z]+ [^:]+): pid=(\d+) uid=(\d+) gids=(.*)$')
+PID_START_DALVIK = re.compile(r'^E/dalvikvm\((\d+)\): >>>>> ([a-zA-Z0-9._:]+) \[ userId:0 \| appId:(\d+) \]$')
 PID_KILL  = re.compile(r'^Killing (\d+):([a-zA-Z0-9._:]+)/[^:]+: (.*)$')
 PID_LEAVE = re.compile(r'^No longer want ([a-zA-Z0-9._:]+) \(pid (\d+)\): .*$')
 PID_DEATH = re.compile(r'^Process ([a-zA-Z0-9._:]+) \(pid (\d+)\) has died.?$')
@@ -211,6 +212,17 @@ def parse_death(tag, message):
       return pid, package_line
   return None, None
 
+def parse_start_proc(line):
+  start = PID_START.match(line)
+  if start is not None:
+    line_package, target, line_pid, line_uid, line_gids = start.groups()
+    return line_package, target, line_pid, line_uid, line_gids
+  start = PID_START_DALVIK.match(line)
+  if start is not None:
+    line_pid, line_package, line_uid = start.groups()
+    return line_package, '', line_pid, line_uid, ''
+  return None
+
 while adb.poll() is None:
   try:
     line = adb.stdout.readline().decode('utf-8', 'replace').strip()
@@ -228,11 +240,9 @@ while adb.poll() is None:
     continue
 
   level, tag, owner, message = log_line.groups()
-
-  start = PID_START.match(message)
-  if start is not None:
-    line_package, target, line_pid, line_uid, line_gids = start.groups()
-
+  start = parse_start_proc(line)
+  if start:
+    line_package, target, line_pid, line_uid, line_gids = start
     if match_packages(line_package):
       pids.add(line_pid)