build failure in pre-commit test on Windows 7

_From [zhao...@google.com](https://code.google.com/u/106321947286816917100/) on May 15, 2012 15:45:16_

$ ctest -S ../drmemory.git/tests/runsuite.cmake
Using Visual Studio 9 2008 generators
building default config "Debug"
building with args ""
building default config "Release"
building with args ""
building default config "Debug"
building with args ""
Error(s) when building project
building default config "Release"
building with args ""
building package in D:/src/cygwin/home/zhaoqin/Workspace/DrMemory/builds/build_drmemory-rel-32
Error(s) when building project
#

RESULTS

...
drmemory-dbg-32: ***\* 39 build errors ****
19>:D:\src\cygwin\home\zhaoqin\Workspace\DrMemory\builds\build_drmemory-dbg-32\dynamorio\include\dr_api.h(46) : fatal error C1083: Cannot open include file: 'dr_defines.h': No such file or directory
19>:D:\src\cygwin\home\zhaoqin\Workspace\DrMemory\builds\build_drmemory-dbg-32\dynamorio\include\dr_api.h(46) : fatal error C1083: Cannot open include file: 'dr_defines.h': No such file or directory
...

zhaoqin@ZHAOQIN3-W ~/Workspace/DrMemory/builds
$ ls build_drmemory-dbg-32/dynamorio/include/*
build_drmemory-dbg-32/dynamorio/include/dr_api.h

zhaoqin@ZHAOQIN3-W ~/Workspace/DrMemory/builds
$ cd build_drmemory-dbg-32/

zhaoqin@ZHAOQIN3-W ~/Workspace/DrMemory/builds/build_drmemory-dbg-32
$ cmake --build . --config Debug
...
10>drmemorylib - 0 error(s), 0 warning(s)
========== Build: 10 succeeded, 0 failed, 68 up-to-date, 0 skipped ==========

_Original issue: http://code.google.com/p/drmemory/issues/detail?id=890_