For complex*, CustomCommand and OutDir tests, non-ascii paths
are avoided in test code by using relative paths, and setting
the working when running the test. This also avoids the
need to internationalize the test code.
For RunCMake.GeneratorExpression, use a UTF-8 encoding in
file(STRINGS) to retrieve the compiled absolute path correctly.
The commit "Test per-config OUTPUT_DIRECTORY properties" added this test
with a find_library() call in a CMake script, which requires an explicit
list of possible library prefixes and suffixes. This commit adds more
suffixes to match the libraries built on HP, MinGW, and Cygwin.
We test (ARCHIVE|LIBRARY|RUNTIME)_OUTPUT_DIRECTORY_<CONFIG> properties
by building COnly as a subdirectory and setting the properties to put
its files in specific locations. We build an executable that verifies
the targets actually appear where expected.
