Removed CaseInsensitiveLocation

1 of 3 commits to correct the CaseInsensitiveLocation. Currently, git
log --follow does not work, because the components/common was deleted
while simultaneously adding a components/loci-legacy and
components/scifio-devel version, where they should have been split out
over multiple commits.

This has the unfortunate side effect of breaking the build, due to a
lack of loci.common.CaseInsensitiveLocation.
Copied modern CaseInsensitiveLocation

Copied the components/scifio-devel CaseInsensitiveLocation back to the
loci-legacy component. This version has the correct history. So git log
--follow on either version is basically the same.
Restored loci-legacy CaseInsensitiveLocation

Reverted the loci-legacy CaseInsensitiveLocation back to its old state.
It now has the correct git log --follow history, although it is missing
some (non-specific) history between the original breakage and this fix.

Unfortunately, the original mistake could not be corrected as it was
already merged to master.