Prepare push to trunk. Now working on version 3.18.2.

R=jkummerow@chromium.org

Review URL: https://codereview.chromium.org/14356002

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@14335 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

ChangeLog

+2013-04-18: Version 3.18.1
+
+        Removed SCons related files and deprecated test suite configurations.
+
+        Improved handling of unary plus (issue 2527).
+
+        Performance and stability improvements on all platforms.
+
+
 2013-04-17: Version 3.18.0
 
         Enabled pretenuring of fast literals in high promotion mode.

src/version.cc

@@ -34,7 +34,7 @@
 // cannot be changed without changing the SCons build script.
 #define MAJOR_VERSION     3
 #define MINOR_VERSION     18
-#define BUILD_NUMBER      1
+#define BUILD_NUMBER      2
 #define PATCH_LEVEL       0
 // Use 1 for candidates and 0 otherwise.
 // (Boolean macro values are not supported by all preprocessors.)