CMakelists.txt STRIP missing "

[xlzheng]

for cmake command, there three errors in CMakelists.txt:
CMake Error at CMakeLists.txt:73 (string):
string sub-command STRIP requires two arguments.

CMake Error at CMakeLists.txt:78 (string):
string sub-command STRIP requires two arguments.

CMake Error at CMakeLists.txt:83 (string):
string sub-command STRIP requires two arguments.

should change to:
73: string(STRIP "${LLVM_LIBRARIES}" LLVM_LIBRARIES)
78: string(STRIP "${LLVM_LDFLAGS}" LLVM_LDFLAGS)
83: string(STRIP "${LLVM_CXXFLAGS}" LLVM_CXXFLAGS)