Merge pull request #4831 from lplewa/os_posix_fallcotace

doc/libpmem/pmem_is_pmem.3.md

doc/libpmemblk/pmemblk_create.3.md

doc/libpmemlog/pmemlog_create.3.md

doc/libpmemobj/pmemobj_open.3.md

src/core/os_windows.c

src/test/libpmempool_bttdev/TEST11.PS1

src/test/libpmempool_bttdev/TEST3.PS1

src/test/libpmempool_bttdev/TEST4.PS1

src/test/libpmempool_bttdev/TEST5.PS1

src/test/libpmempool_bttdev/TEST6.PS1

src/test/obj_pool/TEST35.PS1

src/test/tools/sparsefile/sparsefile.c

src/test/tools/sparsefile/sparsefile.vcxproj

src/test/unittest/unittest.ps1