[Windows] Fix getcwd() on Windows.

Windows doesn't define getcwd(), so this test executable failed
to compile.

Patch by Adrian McCarthy
Differential Revision: http://reviews.llvm.org/D7962

llvm-svn: 230983

lldb/test/functionalities/process_launch/print_cwd.cpp

@@ -1,5 +1,13 @@
 #include <stdio.h>
+
+#ifdef _MSC_VER
+#define _CRT_NONSTDC_NO_WARNINGS
+#include <direct.h>
+#undef getcwd
+#define getcwd(buffer, length) _getcwd(buffer, length)
+#else
 #include <unistd.h>
+#endif
 
 int
 main (int argc, char **argv)