Due to recent version changes within Hotspot, an attempt to build within VS2010 yields the following build diagnostic error message:

1>Build started 5/6/2014 10:05:08 AM.
1>InitializeBuildStatus:
1> Creating "<directory>\build\vs-amd64\compiler2\debug\jvm.unsuccessfulbuild" because "AlwaysCreate" was specified.
1>C:\Program Files (x86)\MSBuild\Microsoft.Cpp\v4.0\Platforms\x64\Microsoft.Cpp.x64.Targets(63,5): error MSB6001: Invalid command line switch for "CL.exe". The value [HOTSPOT_RELEASE_VERSION=""1.9.0"""] contains an odd number of double-quote characters. Only even numbers of literal double-quote characters are acceptable to command line tools.
1>
1>Build FAILED.
1>
1>Time Elapsed 00:00:00.45
========== Build: 0 succeeded, 1 failed, 0 up-to-date, 0 skipped ==========