Inconsistencies is data directory case, cause failures on case sensitive file system.

[sgparry]

On ServerConfigSecurityPage.cs, code has been added to update the data directory using "Data" as the data directory. This causes an install on a case sesnitive file system to fail.
Historically, it has been impossible to get MySQL to operate reliably on Windows without setting lowercase_table_names to 1 or 2. However, it operates well on a Windows system with lowercase_table_names=0 if installed in a folder with case sensitivity enabled:
fsutil file setCaseSensitiveInfo enable
this requires susbsyetm for Linux, but not an avctual linux kernel or linux version of MySQL.
Unforunately, this code change breaks that installer.