Moved class ScriptExecutable to its own module

b/19283946

This move also included the related class SharedObjectUtils.

Change-Id: Iefd587b659c4ad99340c330955b41cd92df45563

rsCppUtils.h

diff --git a/rsCppUtils.h b/rsCppUtils.h
index 1f792bc..cc6d6cf 100644
--- a/rsCppUtils.h
+++ b/rsCppUtils.h
@@ -180,7 +180,6 @@
     return secs/1000000;
 }
 
-
 #endif // RS_SERVER || RS_COMPATIBILITY_LIB
 
 namespace android {
@@ -282,6 +281,8 @@
     return (r >> 2) | ((g >> 2) << 8) | ((b >> 2) << 16) | ((a >> 2) << 24);
 }
 
+const char* rsuJoinStrings(int n, const char* const* strs);
+
 }
 }