[PATCH] test fix-up for VMS

0.52 has new tests that compare a known pathname with what gets returned from check_install().
Except the known pathname is constructed using File::Spec, which on VMS returns paths in native
syntax, whereas check_install() returns Unix-style paths.

The attached patch gets the test passing by converting the comparison pathname to Unix-style syntax on VMS only.

Signed-off-by: Chris 'BinGOs' Williams <chris@bingosnet.co.uk>
Update CHANGES and bump to version 0.54
RT#83728 make requires() more robust
Update CHANGES and bump to version 0.56