For b/3381327: Save 159+ms for every launch of Books, YouTube, Movie Studio...

Before this CL, you will see in the logcat:
  698 StopWatch D StopWatch calcFileSHA1 time (us): 159162
  698 bcc I File opened. fd=45
  698 bcc I File closed. fd=45
  698 StopWatch D StopWatch calcFileSHA1 time (us): 19282
  ...
This CL also cleans up bcc's logcat.

Change-Id: I4e23b459eee0dc77ef186fb761a64d731a721517
diff --git a/lib/bcc/CacheReader.cpp b/lib/bcc/CacheReader.cpp
index a8e252b..e44f5b5 100644
--- a/lib/bcc/CacheReader.cpp
+++ b/lib/bcc/CacheReader.cpp
@@ -153,7 +153,7 @@
 
   if (memcmp(mpHeader->libbcc_build_time, libbcc_build_time, 24) != 0) {
     mpHeader->libbcc_build_time[24 - 1] = '\0'; // ensure terminated
-    LOGE("Build time mismatch: lib %s cached %s\n", libbcc_build_time,
+    LOGW("Build time mismatch: lib %s cached %s\n", libbcc_build_time,
          mpHeader->libbcc_build_time);
     return false;
   }
diff --git a/lib/bcc/Compiler.h b/lib/bcc/Compiler.h
index b90c9e1..abfbc3d 100644
--- a/lib/bcc/Compiler.h
+++ b/lib/bcc/Compiler.h
@@ -121,7 +121,6 @@
 
     int compile();
 
-    // interface for bccGetScriptInfoLog()
     char const *getErrorMessage() {
       return mError.c_str();
     }
diff --git a/lib/bcc/ContextManager.cpp b/lib/bcc/ContextManager.cpp
index ea8c8b1..8d173c1 100644
--- a/lib/bcc/ContextManager.cpp
+++ b/lib/bcc/ContextManager.cpp
@@ -119,7 +119,7 @@
   }
 
   if (ContextSlotTaken[slot]) {
-    LOGE("Suggested bcc context slot has been occupied.\n");
+    LOGW("Suggested bcc context slot has been occupied.\n");
     return NULL;
   }
 
diff --git a/lib/bcc/FileHandle.cpp b/lib/bcc/FileHandle.cpp
index db02741..7dcb065 100644
--- a/lib/bcc/FileHandle.cpp
+++ b/lib/bcc/FileHandle.cpp
@@ -54,7 +54,7 @@
         continue;
       }
 
-      LOGE("Unable to open %s in %s mode.  (reason: %s)\n",
+      LOGW("Unable to open %s in %s mode.  (reason: %s)\n",
            filename, open_mode_str[mode], strerror(errno));
 
       return -1;
@@ -93,11 +93,11 @@
     }
 
     // Good, we have open and lock the file correctly.
-    LOGI("File opened. fd=%d\n", mFD);
+    LOGV("File opened. fd=%d\n", mFD);
     return mFD;
   }
 
-  LOGE("Unable to open %s in %s mode.\n", filename, open_mode_str[mode]);
+  LOGW("Unable to open %s in %s mode.\n", filename, open_mode_str[mode]);
   return -1;
 }
 
@@ -106,7 +106,7 @@
   if (mFD >= 0) {
     flock(mFD, LOCK_UN);
     ::close(mFD);
-    LOGI("File closed. fd=%d\n", mFD);
+    LOGV("File closed. fd=%d\n", mFD);
     mFD = -1;
   }
 }
diff --git a/lib/bcc/Script.cpp b/lib/bcc/Script.cpp
index 23e8f41..cb86ef5 100644
--- a/lib/bcc/Script.cpp
+++ b/lib/bcc/Script.cpp
@@ -240,7 +240,7 @@
       return 1;
     }
 
-    LOGE("Load Library\n");
+    LOGI("Load Library\n");
   }
 
   // Compile and JIT the code
diff --git a/lib/bcc/bcc.cpp b/lib/bcc/bcc.cpp
index 11e3a95..d98c0f8 100644
--- a/lib/bcc/bcc.cpp
+++ b/lib/bcc/bcc.cpp
@@ -63,11 +63,13 @@
   return wrap(new bcc::Script());
 }
 
+
 extern "C" void bccDisposeScript(BCCScriptRef script) {
   BCC_FUNC_LOGGER();
   delete unwrap(script);
 }
 
+
 extern "C" int bccRegisterSymbolCallback(BCCScriptRef script,
                                          BCCSymbolLookupFn pFn,
                                          void *pContext) {
@@ -75,6 +77,7 @@
   return unwrap(script)->registerSymbolCallback(pFn, pContext);
 }
 
+
 extern "C" int bccGetError(BCCScriptRef script) {
   BCC_FUNC_LOGGER();
   return unwrap(script)->getError();
@@ -271,4 +274,3 @@
 #endif
   }
 }
-