add more debug info to SQL section in bugreport

after this CL, adb bugreport will the following info (under SQL section
of each app's meminfo dump)

 SQL
            heap:      344       memoryUsed:      344
pageCacheOverflo:       67  largestMemAlloc:       50

 DATABASES
  Pagesize   Dbsize  Lookaside  Dbname
      1024        7         24  googlesettings.db
      1024       26        110  talk.db
      1024       11          0    (attached) transient_talk_db
      1024       11         32  subscribedfeeds.db
      1024       20         27  gservices.db

Change-Id: Iabd13be9793d9794137c60a045b84fa632f13498